Talk:Year/Archive 1 - Knowledge (XXG)

3850:

system has its first roots in the French revolution , some 1800 years before Caesar's time. From a mathematical-historical point of view should it also be mentioned that already by the time of Caesar astronomers knew that a (vitrual sun orbit) year didn't comprice an interger number of days (day=24 hrs). The Julian (Caecar's) calendar defined the year as 365 + 1/4 days. (not 365.25, the Romans didn't use the decimal commas). I think the article calls for some rewrightings. Either start with the current astronomical definition and the Gregorian Calendar, SI system etc - or begin with a historical overview which includes all known definitions. This lead starts somewhere in the middle. Combining unrelated issues as the zodiac (which has no impact on the definition at all, the time between two summer or winter Solstices or the time between two spring or autumn (=fall) eqinoxes both equal the time of a year. So why involve the zodiac at all ? And this together with the modern SI-system make's the lead blurish, atleast in my mind.

3161:

is larger than their stated present error in the AU, 149,597,870,680 +/-30 a?m± (Newhall et al, 1983)." Also he says: "The DE406 ephemeris extends (Standish 2005a) from 3000 BC to 3000 AD with a stated interpolation accuracy of 25 m for all planets. The variation in the Earth's semi-major axis from 3000 BC to present, due to 149,597,870,687.7 1.5 m (formal error)±???µ, however, is about 68 - 78 m." He goes on to say that the angular position of the planets could give an accurate test of this effect if the mass of more asteroids could be determined with more accuracy since the other planets and even the larger asteroids can change a planet's position.

2255:. Also, "the duration of the year is measured with SI time" is not true, with the possible exception of some narrow scientific audience. The length of the year has been based on the seasonal cycle since prehistoric times. The dominant calendar in international commerce and affairs is the Gregorian calendar, which implicitly counts actual solar days, since at the time it was created in the 14th century, there was no clock that could approach the accuracy of solar timekeeping. I am not aware that the Roman Catholic Church has announced a change from a count of observed solar days to a count of days of 5201:

is planned or agreed to; it isn't. Also, it makes it seem as if the need for a reset is due to the difference between duration of the current mean tropical year and the mean Gregorian year, but in reality, a major factor in any reset would be the duration of the tropical year at some future time, when such a reset might be under serious consideration; the future length of the tropical year will be a fractionally smaller number of mean solar days. The degree to which the rotation rate of the Earth will slow down is unpredictable, at least with current scientific knowledge. See

1645:, the oldest national astronomical almanac in the world, a century older than the British version and two centuries older than the American version. During 1900–2100, the position of Earth calculated by VSOP did not deviate from that calculated by DE200 by more than 0.005", which corresponds to a tenth of a second (six fractional decimal digits of a day). There is no detectable gradually increasing deviation between VSOP and DE200 positions for Earth over a century, as expected since their mean years are the same. See 2177:

vernal equinox year, summer solstice year, autumnal equinox year, and winter solstice year, depending on what solar longitude the year begins. They differ by about two minutes from each other as Earth's perihelion or aphelion approaches or recedes from the specified equinox or solstice. This is your reason 1. It is due to the period of Earth's elliptical orbit (its mean anomalistic year or the derivative of its equation of the center) differing from the period of its mean tropical year. This in turn is due to the

2671:. I get that I cannot use my own writing on Quora as a cited source. I am FrankH and I am also the Frank Heile of Quora. I do have a Ph.D. in particle physics but I have not published any papers about planetary orbits. However the calculations I've done just use elementary algebra and High School level physics. Since the original "citation" just calculated the result in line, I would propose to just show my calculations in line also. The current number and citation state: 2917:

Also, it would be best to state which year this would apply to; I would think it would apply to the anomalistic year, right? Unfortunately, we don't have an anomalistic year article, so I don't know if this variation compares to other variations that the anomalistic year may be subject to, so I can't judge if this variation is worth mentioning compared to the other variations. Ideally we would know if this change is experimentally verifiable. 00:09, 2 October 2012 (UTC)

4684:"The vernal equinox slowly regresses along the ecliptic (precession). When ... the sun returns to the vernal point it has not made a complete circuit with respect to the stars ... This small arc is described with a somewhat different speed, according to its position with respect to the perihelion of the Earth's orbit. Depending on the starting point adopted for the 'year', one complete circuit in tropical longitude will have a somewhat variable length." 31: 4110:

difference (though I'll look for evidence), but now that we know the separate figures, I see no reason to suppress them. The addition which you last reverted was in fact a rounded figure, not to the six decimal that you previously reverted, but the figure has been measured to the same accuracy as your figure for the mean tropical year (which I have never disputed). Why are you edit-warring over this? Isn't there room for both figures?

479:. I have moved it here because I have never heard of it even with my fairly extensive knowledge of Chinese astronomy and Creation myths, and no citation is given. It is doubtful that it is the source of the Western 24-hour day because the Chinese used a clock with twelve double hours, not one with 24 hours. The standard explanation for the Western 24-hour clock is that the Egyptians used 24 seasonal hours (12 daylignt and 12 nighttime). 3025:. If solar mass was ignored as a factor in these key ephemerides until at least 1995, and possibly to this day, that suggest to me that loss of solar mass is unworthy of mention in an encyclopedia article on such a broad topic as the year. I think we should just remove it, at least we can identify for sure which kind of year it most directly applies to, and whether it is significant compared to the other variations in that kind of year. 6411: 4001:, or Laskar's expression (1986, p. 64). When viewed over a 1 year period, the mean longitude is very nearly a linear function of Terrestrial Time. To find the length of the tropical year, the mean longitude is differentiated, to give the angular speed of the Sun as a function of Terrestrial Time, and this angular speed is used to compute how long it would take for the Sun to move 360°. (Meeus & Savoie, 1992, p. 42). 1550:

plus thousands of sinusoidal terms yielding an accuracy of about a milliarcsecond. Considering only Earth, if we ignore all sinusoidal terms and take the derivative of its mean longitude poynomial we obtain both the sidereal year (relative to the fixed equinox J2000.0, equivalent to a fixed star) and the tropical year (relative to the equinox of date, that is, the precessing equinox). The mean positions were revised by

6312: 3179:

kinds of "years" all depend on what criterion is used to start and stop the measurement of the length of a year so they all would be affected. So, even though this effect is currently to small to be measured, there is no doubt that it is a real effect which will soon be apparent as the modelling and measuring of the orbits of planets are improved. FrankH 04:48, 4 October 2012 (UTC)

2186:

and solstices as a secular change because they move relative to either the mean tropical year or the Gregorian year in only one direction. However, the resulting seasonal years are periodic over millennia when given in SI days. But these seasonal years oscillate around a linearly decreasing length when Earth's year is specified in lengthing mean solar days (1.75 ms/cy) (cause 3). See

4528:, Washington: Bureau of Equipment, Navy Department). This book can be found on Google Books. On page 9 he states the latest equation for the mean longitude of the Sun, and on page 10 he states he derived the length of the tropical value from the mean longitude. The method of deriving the length of the tropical year from the mean longitude is fairly obvious and is explained on the 1683:"The sidereal and tropical years were calculated via an analytical solution of Newton's universal theory of gravitation applied simultaneously to all planets performed by the Observatory of Paris called VSOP. The result is the position of all those planets in the form of a mean position polynomial plus thousands of sinusoidal terms yielding an accuracy of about a milliarcsecond." 5481:

mean tropical year and the vernal equinox year, the reason being that the tables used by the Papal astronomers were based on historical observations, and over centuries tidal drag slows the earth's diurnal rotation. Clavius noted that the tables did not agree on when the sun passed through the vernal equinox. As a result of this slowing down the equinox will never reach 22 March.

3220:

vernal equinox, which is hard to precisely locate, which is a big reason why sidereal time has been redefined in terms of earth rotation angle. So uncertainties in the definition of tropical year might swamp the effect of solar mass decrease. Other kinds of years might be more accurately measurable, so there might be a potential of experimentally verifying the solar mass effect.

3277:

solar mass loss should have more details - for example, how much variation does the gravitational effect of the other planets have on the typical length of the year? I know on this talk page, it is mentioned somewhere that it could be 25 minutes. I don't know any citation for that but if there is one, I think that would be relevant number to mention.

6382: 101:

force balance of the centripetal and gravitational forces. This radial change will give a new period since the kenetic and potential energy is related in orbital mechanics. I'm currious about the change in the period over time, since it has implications on the age of the earth, and the rate of energy output of the sun.

4682:

the mean tropical year are averaged over all points of the tropical zodiac. This averaging is inherent in the method. Meeus and Savoie also calculate times between individual equinoxes and solstices for the J2000 epoch, and this separate calculation is the 365.242374 days that 156.61.250.250 objects to. They explain:

4655:(Wiley, New York, 2000), pp. 381–2) indicate that calculating the mean interval between vernal equinoxes is a method, although not the method currently used by astronomers, of calculating the tropical year, and it does give a different result from the current astronomical definition of the tropical year. 5200:

Sorry, I changed the wrong part. I meant to remove the preceding clause "consequently, a leap-cycle adjustment is periodically required to "re-set" the desired alignment of the calendar with the vernal equinox." This statement is incorrect for several reasons. One, it makes it seem as if such a reset

4681:

Yes, we are talking about different calculations. The Meeus and Savoie value for the mean tropical year is just an update of the Leverrier and Newcomb calculations using slightly more accurate modern data. (I've clarified that their calculations are for the J2000 epoch.) All of these calculations of

4027:

Yes, I wasn't suggesting that we should delete the record of what modern astronomers have measured, but their measurement of the "mean tropical year" is not actually used for any purpose other than defining their particular year (and perhaps for making predictions about rates of change of rotation).

3460:

publishes values for the length of the mean tropical, sidereal, anomalistic, and eclipse years. The volumes I have at hand are for 2001 and 2011, and the change over that period is too small to get a good idea of how quickly the year lengths change. At least for the 2011 values, they are derived from

3302:

In any case, since I think we are all agreed the current number is wrong, I will make the edit. Please forgive me if I make any reference formatting error. (By the way, I sign my edits with the 4 "~"'s but for some reason the "SineBot" ends up signing it for me. Why? What am I doing wrong?) FrankH

2916:

I'll take your word that you've researched it; my knowledge of angular momentum for orbits is a little rusty. I'd rather have a justified argument than an unreferenced bare claim. It would be better still if you could provide citations for the formulas you used and the rate of decrease in solar mass.

2461:

Would it be acceptable to use that link as the citation? I don't know the policy on citations very well - it has been several years since I edited anything on Knowledge (XXG) and we were much looser back in those days :-). I would be happy to make the edit but I don't know how to cite correctly and

2053:

between the Earth and the Moon and Sun increases the length of the day and of the month (by transferring angular momentum from the rotation of the Earth to the revolution of the Moon); since the apparent mean solar day is the unit with which we measure the length of the year in civil life, the length

1757:

and subsequent pages, including the next chapter. Analytical keeps the masses of the planets as variables, whereas semi-analytical replaces them with their numerical ratios relative to the mass of the Sun before solving the system of equations. This assumes that the masses are virtually constant over

708:), namely between God's 343-day septenary year and between devil's 360-day sexagesimal year. 346 excess above 343 by 3 days, and 365 excess above 360 by 5 days, making draconic year closer to God's 7*7*7=343, than tropical year to devil's 6*6*10=360. More about full septimalization of all units here: 100:

Can some physics guru out there calculate the shorting of the year due to the mass loss of the sun over time. Because the rate is so gradual I do not expect there to be non equillibrium effects. Assuming a circular orbit, the radial orbit change(accelleration) should be able to be calculated from a

5068:

The article mentions that conventionally, years ago, or 'ya', increase from right to left on a graph, then goes on to assert that this is counter-intuitive. Who says? Ya has units of negative years, and the negative horizontal axis almost unfailingly increases (in the sense of absolute value) to the

4830:

In this country, the phrase "a couple" means two - some languages are more relaxed. An equinox is scheduled for 28 February 3000 (Julian) at 16:27:21. There was one on 14 March 1000 at 23:11:47. The date difference is 15 days 6:44:26. 2000 Julian years are 73 050 days. Subtracting the date

4686:. I have no reason to doubt the accuracy of the Meeus and Savoie calculations, and I see no reason for suppression of their figures, especially as they are cited in other publications, but I agree that it would be good to see the details of the method and to have the figures checked independently. 3663:

Hearing no objection, I have recompared my formulas to those in the Astronomical Almanac for 2011 and Simon et at. and found that Simon actually gave more than one expression for some of the quantities, so I used the ones specified in the Astronomical Almanac. I also found Taff, an older source with

3219:

I guess what I was thinking when I asked about what kind of year it applies to was what is the most simply defined year this applies to, and for what kind of year is it most likely to be experimentally verifiable? Taking the tropical year as an example, it's definition depends on the location of the

3160:

So this has been peer reviewed and is a real theoretical effect. By my reading of Noerdlingler, the effect is just on the edge of being experimentally verified. For example he says: "In the 44 centuries spanned by the DE200 ephemeris (Newhall et al 1983), the increase in amounts to 60 - 69 m, which

3142:

it says: "The major fluctuation is the eleven-year solar cycle (sunspot cycle), which causes a periodic variation of about ±0.1%. Any other variation over the last 200–300 years is thought to be much smaller than this....^ a b Noedlinger, Peter D. (2008), "Solar Mass Loss, the Astronomical Unit, and

2584:

One could describe the variation in the last 20 years or so by going to a decent college library and transcribing the lengths of the various kinds of years from whichever almanacs they have on hand. So far as I've noticed, the 2nd edition of the Explanatory Supplement really only addresses variation

2423:

As Joe Kress's discussion implies, and as those who study historical chronology must be aware, the year has been taken to begin at various times of the year. A common tradition was to take the beginning of Spring as the beginning of the year, that is when the Sun was at the vernal equinox (entering

2320:

I have added a citation to the Delta T article. Of course Newcomb's formula has no trace of a spin rate decrease; the formula was intended to be used over a period of a century or so, and the clocks available near the end of the 19th century, when the formula was created, were not accurate enough to

1110:

I tried adding "The experienced average approximate year is 365.25 days." before the fact that 400 Gregorian years make an integral number of weeks near the end of the article. It was as a remark that we all happen to live near the year 2000 intended with humor in the way I assume all of the overly

823:

The article states that the Julian calender has 365.25 days per year but something is not right. How can there be 52 weeks in a year times seven days a week which equals 364 days? Is it safe to conclude that there are really 52.xxx weeks in a year, but we just round down to make it an even number ?

214:

For a leap year, step forward four years at a time, counting one for each common year passed and two for each leap year, until you reach a count which is a multiple of 7 at a leap year. That will be 12 or 28 or 40 years ahead. Note that a leap year with its following three common years counts as -1,

139:

I removed "the hottest day of the year" as an example starting point for a seasonal year because it is not a definite/conclusive starting point in that there could always be a unexpected hotter day later on. All the other given examples have definite starting points, for instance when flowers start

2549:

LeadSongDog's decided to restore the section and try to find sources. But the citation to the glossary of the Online Astronomical Almanac does not say anything like "The exact length of an astronomical year changes over time." Only someone who does not need to read this article could infer a change

2229:

This article is about "year" not about "day". That the rotation of the Earth around the polar axis must decrease due to tidal friction is clear from basic physical principles. But when editors of WIKIPEDIA state that this is the reason why leap seconds must be inserted to avoid that SI times runs

1636:

Don't denigrate VSOP. It is NOT an approximation. It is directly comparable to the JPL ephemeris DE200. Indeed, the integration constants of VSOP were explicitly fitted to DE200, causing their mean years to be identical. Both were used to calculate their respective almanacs from 1984 until at least

1468:

The article clearly states that the sidereal year is counted relative the celestial sphere (distant stars/galaxis, i.e. ICRS as used for the JPL ephemeris!) while the tropical year is with respect to the vernal equinox. For this I used the standard precession model to find the momentary position of

963:

The listed refs went through a revision process, so the links were broken when ISO 31-1:1992 was replaced by ISO 80000-3:2006 recently. I haven't yet had a chance to review the new issues. Likewise the implementing NIST pub was revised in 2008. The merge may be a good idea, we'll have to give it

846:

Anyone who states that there are 52 weeks in a year is not being precise. The Julian year has either 365 or 366 days thus 52 weeks and either one or two extra days beyond that number of whole weeks. But these two values mean that a single value for the number of weeks in a year (52.xxx) is possible

265:

You cite a wikipage that already lists the years that have identical calendars, so I gather you don't just want to know what years are identical, but how to determine them by calculation. Unfortunately, I don't know of any such calculation. I can only mention that whatever the repetitions are, they

5490:

The paragraph mixes up some ideas, and rambles, so it's hard to tell what the paragraph is trying to tell us. One idea is that mean length of the Gregorian calendar year is longer than the length of the mean tropical year. But then we have this sentence: "The astronomical equinox is moving towards

5480:

Since AD 800 the vernal equinox year has been longer than the mean tropical year. The astronomical equinox is moving towards its mean date (in 1983 the mean equinox fell at 1.48 AM GMT on 23 March, though the actual equinox that year was on 21 March). The mean calendar year is longer than both the

4646:

The Meeus and Savoie value (p.42, middle of right column) is for 2000. I interpreted 156.61.250.250's post of 14:33, 24 April 2015 (UTC) to mean that because Meeus and Savoie's value (six lines above the value for the mean tropical year at 2000), which is 365.242374 ephemeris days, is too far from

3178:

In terms of which of the various kinds of "years" this effect would apply to, I believe the answer is ALL of them. This effect is, after all, an actual change in the radius of the orbit which would therefore apply to any of the different ways a year is measured. As I understand it, the different

2185:

perturbations by the other planets and the Moon on Earth's orbit amounting to many minutes (your estimate of ±25 minutes may or may not be correct). This is your reason 2 (periodic), which is distinct from reason 1 (secular). I view the movement of the perihelion/aphelion relative to the equinoxes

2176:

The length of the tropical year is the sum of three parts. (1) The mean length of the tropical year in the form of a polynomial. Newcomb's version had a constant term and a linear term. The VSOP version has a constant term and several higher degree terms. (2) The length of four seasonal years: the

1815:

of the Sun to increase by 360 degrees. Since the Sun's ecliptic longitude is measured with respect to the equinox, the tropical year comprises a complete cycle of the seasons. The tropical year is usually defined as the time from two successive "mid-winters" (the point of the Earth orbit when the

1713:

of an elliptical orbit. The result includes the masses of the planets to various powers or orders. Before 1984, hand calculation limited the order of the masses to one or two, but the advent of electronic computers allowed VSOP to increase the order to three (six for the gas giants). I do not know

483:

Oriental astronomy puts the length of one Great Year at 24,000 years comprised of one ascending cycle of 12,000 years and one descending cycle of 12,000 years. Some scholars believe this may be the original basis for the current system of daily time; a 24 hour day with 12 hours of increasing light

5711:

I'm afraid I don't get your argument that "a theoretical astronomers construct" bears little relation to reality. The purpose of these constructs is to map reality. They are very, very useful - which is why astronomers expend energy in calculating them. As an example, take the "mean sun".

5184:

Jc3s5h: I have restored my previous edit because, again, it is a correction of grammar and an improvement for readability. If you disagree with these two points, I request you explain your reasoning here, especially vis-a-vis these two points. And certainly, please explain how re-positioning the

4328:

which gave the value of the seasonal year as 365;14,33 (Babylonian sexagesimal notation) i.e. 365.2425 days. The more accurate and more recent calculation for the mean interval between vernal equinoxes around "era 2000" was calculated using Newcomb's or Laskar's formula, taking into account the

3913:

Only the Julian year is defined in terms of the second (and it's the SI variety). All other years for millennia have been attempts to get a year to match the time between solstices and equinoxes. The Julian calendar got the calculation slightly wrong (though it was an excellent estimate for its

3276:

If there were a more appropriate article like "Variability of the Year" I would agree that would be the place to put this information. Failing that, I do think "Year" is an appropriate place to talk about the variability of the year. In fact I think the bullet points before the discussion of the

2487:

That section suffered from an egregious lack of citations. It also suffered from a total lack of meaningful organization. It appeared that some editor, qualified or not, searched through a drawer and tossed in some scattered "facts" with no concern about what was significant, what was possible to

2215:

The gravitational attraction of the Earth to the other planets causes the year to vary with the comparatievly hugh amount of up to +-25 minutes. But these variations are indeed periodic. For example Jupiter having the orbital period of 11.86 years causes periodic variations with a period of this

1929:

The precession of the equinoxes changes the position of astronomical events with respect to the apsides of Earth's orbit. An event moving toward perihelion recurs with a decreasing period from year to year; an event moving toward aphelion recurs with an increasing period from year to year (though

1549:

The sidereal and tropical years were calculated via an analytical solution of Newton's universal theory of gravitation applied simultaneously to all planets performed by the Observatory of Paris called VSOP. The result is the position of all those planets in the form of a mean position polynomial

682:

A "solution" implies a problem or purpose. If the purpose is to appease the religious nutjobs, I guess 343 has its uses (until someone comes along who says 343 is satanic); if the purpose is to keep track of the seasons, better to stick with the tropical year God gave us. If God wanted us to use

5522:

using the sockpuppet 156.61.250.250. Since the community has made the judgement that edits by banned users are not worthy of discussion, and since I wholeheartedly agree that this editor's "contributions" are unworthy of discussion, I put the section back the way it was before the improper edit.

4583:

Well Newcomb's method gives 365.24219294 days for the mean tropical year in the epoch J2000 (compared with 365.24219023 for the Leverrier formula) whilst the Meeus and Savoie value for J2000 is 365.242189623 ephemeris days (i.e. mean solar days for the 1900 epoch). I agree that this accuracy is

3773:

What is a year? Is it that the earth goes round the sun by 360 degrees? Or in relativity terms, equally, the universe rotates around the solar system 360 degrees, which is essentially the same thing from out viewpoint. So a year is defined by the observable frame of reference. Or is it that the

2978:

So, I would like to fix this, (or have someone else fix it if they want). In terms of current practice is it acceptable to use an arxiv as a citation source or does it need to be MORE published than that? Also, does the conversion of "twice mass loss" to 5.8 microseconds need to be "cited" (is

1521:

As for your question "What is the source for your article?", are you addressing this to Knowledge (XXG) editors in general? The sources are documented in the article, to some degree. Any other sources not documented in the article are unknown. If the question is addressed to me, I never wrote an

4775:

years, then the vernal equinox mean will match the tropical year, but that's a very long period of time, and by then some of the constants will have changed, including our definitions of days and seconds if humans are still around. Meanwhile, averaged over a couple of thousand years centred on

4516:

Let me start with a simple comment. Recent versions of the article gave the mean interval between vernal equinoxes to four decimal places, which is a precision of about 9 seconds. Currently the difference between the UT1 day and the SI day is around 1.5 ms, which over the course of a year would

4109:

No, I'm simply recording what has been measured. Astronomers have measured both the mean time between northward equinoxes and the mean year averaged over both equinoxes and solstices. I accept that, at the time the Gregorian calendar was constructed, they might not have known that there was a

3849:

etc, etc - are all monuments to show the cardinal directions or where the sun rises at summer or winter Solstice. Twelve (virual) full moons have been used in order to define a year etc. The current lead is a mish-mash , for instance why involving the SI-system with the Julian Calendar ? The SI

3436:

on page L8 to find the lengths of the mean sidereal, mean tropical, and mean anomalistic years for 0, 1900, and 2000, I saw that the year with the least variation was the sidereal year, which showed 100 μs per year on average for the period 1900 to 2000. This is nearly 20 times greater than the

3121:

it says: "The Sun is constantly losing mass by radiating away energy, so the orbits of the planets are steadily expanding outward from the Sun." ^ Noerdlinger, Peter D. (2008), "Solar Mass Loss, the Astronomical Unit, and the Scale of the Solar System", Celest. Mech. Dynam. Astron. 0801: 3807,

2456:

The proper way to do this is to assume that the orbital angular momentum is constant so that when the Suns mass decreases, both the radius of the orbit and the period of the orbit increase at the same time. The cited note only takes into account a period increase. I would just edit the number

1846:

around the Sun successive years would have had exactly the same duration and the durations of a sidereal year and an anomalistic year would have been the same. But due to the gravitational forces from the other planets the Earth follows slightly different trajectories in different years and the

1065:

I read this article with a hope to better understand what's happening astronomically that causes what we experience as seasonal variation. I soon got bogged down in too many similar-sounding definitions of a year and links to other articles (like the one on precession) which also failed to make

6593:

The word "year" as it has been used by humans for thousands of years, has always referred to the tropical year. As such the introduction is making a clear mistake when stating that it refers to the orbital period. Instead it should make it clear that a "year" only approximately is based on the

3894:

atom), 1/86,400 of a mean solar day, or 1/86,400 of an apparent solar day. These are all different durations. Of course, one could tell a white lie in the lead and not say which kind of second is being used, and provide that mandatory information in later section; that is a matter of editorial

1704:

My wording was poor. All national ephemerides from about 1750 to 1983 were based on analytical (or semi-analytical) solutions of Newton's universal theory of gravitation specified as a mean position polynomial (its derivative is the mean year) plus a series of sinusoidal terms, including Simon

146:

The "hottest day of the year" would be a great idea--but only if it were done in a talk page which shows the date and exact time. The only problem then would be that you would not know "where" this "hottest day of the year" was located. Too bad that in the talk pages it doesn't show the "exact

6436:

The article is copy protected, I can't make even a minor edit. First paragraph: " the course of a year sees the passing of the seasons". The course of a year doesn't have eyes; it can't see anything. There are perfectly good, non-figurative words that can be used instead of "sees". How about

2288:

But no reference for this figure is given nor is it said if this a theoretical or an observed value. But that it is a theoretical value should be clear from the rest of the article where it is said that other rather unpredictable effects changing/decreasing the moment of inertia of the Earth

1858:

These variations +- 25 minutes due to the small differences between the trajectories of the Earth in different years caused by the varying constellations of the other planets affect both types of year in the same way, the sidereal year is therefore every year about 20 minutes longer then the

4535:

More recent values for the mean longitude of the Sun are given in Laskar's paper mentioned above by Dbfirs, specifically on pages 63–64. It is also explained in a similar, but updated, paper by Simon, Bretagnon, Charpont, Chapont-Touze, Francou, and Laskar in 1994 ("Numerical expressions for

4403:

Well, that paper you quoted is straightforward celestial mechanics, such as used in SOLEX to pinpoint the future position of planets (claimed to predict simultaneous transits of Mercury and Venus hundreds of thousands of years into the future). Your reference to "the precession of separate

1686:

If I understand this correctly this is an analytical approach to find the mean over a period when the whole Solar System has recycled, i.e. a period of time for which all (or at least all large) planets has made an integer number of orbital revolutions. But if this corresponds to a period of

1247:

that some authorities assert that one year is 365.44 day, instead of 365.25. I did a quick Google search on the two terms but was unable to find any intelligible information corroborating or even elaborating on this assertion. If anyone knows something about this, please provide information.

5228:

Jc3s5h: Thank you for your gracious and informative reply---and I apologize to you---had I not been late for yet another out-the-door to somewhere-else I should have caught the obvious glitch; then the need would be merely to notice you rather than to stress myself and bug you. The suspect

3996:

Modern astronomers define the tropical year as time for the Sun's mean longitude to increase by 360°. The process for finding an expression for the length of the tropical year is to first find an expression for the Sun's mean longitude (with respect to ♈), such as Newcomb's expression given

1069:

It seems to me that the historically first and lay definition of the year involves this cyclic change of climate. It would seem natural to lead into the article with a discussion of this definition of a year, so that readers are grounded in something they find familiar. I'm sure there's an

5604:

astronomical equinox is" although the precise time of it appears in the very sentence which references it! I don't think that an entire paragraph should go just because of a perceived deficiency in one sentence. I would suggest improving the sentence instead - for example, we could add

5603:

I'm finding this discussion very confusing. Jc3s5h points out that the word "mean" points to a precise astronomical definition and adds back the reference to the "mean date" of the equinox, which is followed by a precise timing. But then he says "I don't know what the mean date of the

4564:

Of course they don't give an explanation of how they calculated the mean interval between vernal equinoxes. There's only one way to do it - the method explained by Newcomb and refined by later celestial mathematicians. Meeus and Savoie's value is too far from Newcomb's to be correct.

2533:" articles. I would suggest if more material is to be added about other, that would be enough to make articles about the affected years (anomalistic, eclipse, or Gaussian year) and just mention in the "Year" article that details on variation can be found in the newly-created articles. 3405:

A blast from the past! Clearly I wasn't paying much attention to consistency of format. IIRC, I was more concerned with finding some useful sources at the time. I don't really care much about dateformats, so long as the meaning is clear. No objection from me to a consistency change.

4074:

You're being disingenuous with your edit summary. It is evident from the above post that you know exactly what the mean equinox is. You insist on inserting an undefined year length which you claim to be accurate to six places of decimals, which is about a twentieth of a second.

1653:(English). VSOP82 and VSOP87 have comparable accuracy—the VSOP87 solution was presented in a greater variety of coordinates, including Cartesian and spherical coordinates relative to both the fixed J2000 equinox and the equinox of date. JPL confirms that VSOP was fitted to DE200 in 5491:

its mean date (in 1983 the mean equinox fell at 1.48 AM GMT on 23 March, though the actual equinox that year was on 21 March)." I don't know what the mean date of the astronomical equinox is. I think that sentence is so bad that it should condemn the entire paragraph to deletion.

1446:. Your calculation does not agree because it is for a specific year, not a mean sidereal year, and because the sidereal year is relative to the mean northern vernal equinox of J2000 while the ICRS is relative to an origin based on long baseline interferometry of distant galaxies. 2396:. Because that calendar was a solar calendar, the vernal equinox occurred on March 22–25. By the 3rd century, the vernal equinox had moved to about March 21. For the next 13 centuries, the vernal equinox continued to move, reaching March 10 near the end of the 16th century. The 2230:

ahead of the Earth rotation I think they are ahead of science ("relayable references", please). To my knowledge this decrease of rotation rate is also with atomic time and observations of distant quasars not observable and that the bias of SI time (a too short SI second to fit

1899:

In for example Japan "16:50, 12 June 2011 (UTC)" corresponds to Wednesday! Otherwise I have no objection to your improvements of the language as far as the meaning is not changed. English is possibly your mother tongue! A table (possibly reduced) similar to what I put in into

2341:

It's a good article, but I went looking for an answer to that question and couldn't find it, though maybe I missed it. What is the reason or origin of attributing the "start" of the year to the (arbitrary?) position the earth is at in its orbit on what we can "January 1st?"

1291:

41.241.66.203 recently added a section on rough calculations, with the justification that the calculations could be done mentally. However, the calculations involved raising a number to the 7.5 power. Very few people can do that mentally. Therefore I removed the new section.

2966:, That is an excellent reference! According to the mass loss they quote of 9.13 10^-14 and their statement that the period of planetary orbits will increase at twice that amount gives a 5.8 microsecond per year increase for the earth. That calculation is from WolframAlpha 2502:

There is a way to reliably determine that the Frank Heile who wrote on Quora or a personal website is the same person who published in the reliable sources. The most direct way to accomplish this would be if a personal website had been mentioned in a peer-reviewed article.

3774:

earth gets back to its same position on its elliptical orbit? Is it both? Or is the elliptical path our planet takes not 360 degrees? (presumably not as seasons don't gradually drift.) This page would also be the appropriate place on Knowledge (XXG) to cover this issue.

5031:

Yes, I understood what the writer meant without having to think about it or clicking the link. It's a common measure in some sciences, but will be less familiar to non-scientists who might have to click the link. An exact equivalent of one part per million is 0.0001%.

3461:

the work by Simon et al. (1994). The 2001 volume does not say what method was used to find the year length, but it seems that even if we used the volume for 1994 and it used the same method as 2011, the change wouldn't be great enough to estimate the rate of change well.

1070:

astronomical correlate of this "year of the seasons" I'm talking about, although from the article I can't tell what it is (probably the tropical or sidereal year). This should be the first concept to be introduced and other definitions of a year should follow from there.

285:. Thus Gregorian calendar years 1801, 1829, 1857, 1885 began with a Thursday, like 1901, 1929, 1957, 1985 with a Tuesday. There are exactly 20871 weeks in a Gregorian 400 years cycle, so it well repeats after each full cycle. All in all, there exist only 14 calendars. 2639:

That section in the Explanatory Supplement is about sidereal time, which is measured with respect to the vernal equinox, and is subject to precession. The sidereal year is measured with respect to the so-called fixed stars, so is not subject to precession. Check the

1949:

is a consequence of the "perturbation by the gravity of every other planet". Technically one distinguishes between "(short) periodic" and "secular" orbital perturbations but this is not the place to analyse these perturbation in detail! This is for example done in

745:

I see that some prefer 7, so I'll chime in with a fact that might be found a little more appealing as regards the current system (and previous Julian): (365+1/4)^4=17797577732+7^2/2^8. This has a simpler relative you may like less (but there is a seventh power):

5712:

That is "a theoretical astronomers construct" which underpins our civilisation, being the basis of civil timekeeping. Another example is the mean tropical year, a highly important constant in celestial mechanics and the basis of the regulation of the calendar.

4269:

No, you have this completely wrong. The measurement for the mean tropical year is the formula contained in Newcomb's Tables of the Sun (1898). You're saying that this figure accurate to 1/20 second is an average of measurements. What measurements exactly?

2890:

Since the incorrect dependence of period on mass was 1/sqrt(M) instead of the correct 1/M^2 the resulting correct answer is 4 times the incorrect answer. If there is no objection, I will make the edit tomorrow? Is that OK? FrankH 23:42, 1 October 2012 (UTC)

703:

Thus better use purely septenary system. Both draconitic and tropical year are not ideal 360 and 343 days, but their approximations such as 365.24218967 and 346.620075883 days. That proves that God provided us possibility of choosing between blessing and curse

625:

OK, I now see that, while the (Newtonian) gravitational constant G is a constant of the universe, the Gaussian constant is parochial and is governed by the orbit that the Earth happens to have - it could be called the Earth's Gaussian Gravitational Constant.

1558:. On page 675 of Simon is the mean longitude of Earth λ refered to the mean dynamical ecliptic and equinox J2000, where t is the number of Julian millennia each containing 365250 days. The coefficient of t is 1295977422.83429"/Julian millennia. Calculating 5468:

I think Jbeans' edit made the paragraph works, in part because whenever the word "mean" is added to a astronomical phrase, it usually implies a strict definition, which can often be looked up in tables or calculated with a widely respected software like

4544:

for the tropical year. The latter paper contains in § 5 "Mean elements of the planets" an explanation that the mean longitude is based on the long period perturbations, that is, those with periods on the order of 10,000 years, and that the analysis uses

1142:

Are you saying "in the experience of people living between 1900 Mar 1 and 2100 Feb 28, the average year-length is 365.25"? With a bit of effort I can see some humor in that, but not enough to justify going out of one's way to mention it in the article.

555:

A year consists in 365.25 days of 86400 seconds = 31,557,600 seconds, which equals 10E^7.499104 seconds. So a gigayear sounds like a long time, but when you convert it you get 10E^16.499104 seconds or say 10E^16.5 seconds, which doesn't sound near as

176:

I added bullets to the listings of the astronomical years because I think it looks better in general and breaks up the different types for easier reading. I don't know if doing this is within Wiki-policy, anyone care to comment or take a vote on it?

3914:

time), hence the Gregorian reform which matched many other cultures in fixing a year as the time between northward equinoxes. More emphasis needs to be given to this equinox definition since it has been the most common worldwide throughout history (

6452:

A reasonable comment but "features" isn't exactly an improvement: it refers to a single event. My first idea was "marks" but no: maybe the months mark the passing of the seasons but not the whole year. Anyone else? Meanwhile, "sees" is inoffensive.

1778:

Following the recent discussion "Duration of a sidereal day" I would propose the following rewrite of section "Sidereal, tropical, and anomalistic years". If no one objects here I will do the change on Wednesday. Here follows the proposed rewrite:

1594:

Mid-winter is defined as the epoch when the Earth passes the projection of the Earth axis (computed using standard precession matrix) on the osculating orbital (ecliptic) plane. 39 mid-winter to mid-winter years took in total 14244.4553 SI days =:

635:

In "Calendar year", the day is the (mean) solar day, defined by light-and-dark, of 86400-plus-a-bit SI seconds (the bit represents leap seconds). The Julian Year apparently uses the same unit. The Sidereal Year is given explicitly in SI seconds.

6509:

section gives several "actual numbers" for various kinds of years. The calendar was designed to approximate the tropical year, which is not what astronomers would call an "orbital period". The orbital period is also known as the anomalistic year.

2969:. Their statement of twice the mass loss rate is exactly what I computed with conservation of angular momentum (which they also mention). So the current answer is definitely wrong since it assumes "half" the rate due to the sqrt(M) dependence. 1012:

is a little better, though admittedly not much. I'm fairly confident the bulk of either can be supported in available refs. Were there specific statements that you see as OR or as SYN? If so, don't hesitate to tag the cases that trouble you

3241:

Now that we have a decent citation to work with, and you have dug through it to verify the effect is not yet experimentally verifiability, but might be in the not-to-distant future, do you think it belongs in an article as general as "Year"?

439:

The Gregorian calendar includes lunar as well as solar aspects (although the lunar aspects are usually only used for religious purposes). I doubt Rwflammang's technique finds the next year that is identical in both the solar and lunar sense.

3038:

As for the question of using an arxiv article, I think it would be ok as a convenience copy for people who lack access to scientific journals, but only if the same, or a nearly identical article, were also published in a suitable journal.

1220:

was 365.24219879 days at J1900.0. Needless to say, the approximation 365.242199 days is quite old. The J2000.0 value of the mean tropical year is already in the article alongside values for the sidereal, anomalistic, and draconic years. —

3464:

I therefore implemented the expressions from Simon et al, and took derivatives as indicated on page L8 of the 2011 volume (actually those instructions need some improvement). I only did the mean tropical, sidereal, and anomalistic years.

2400:

moved the vernal equinox back to near March 21 and drastically reduced its drift away from that date after many centuries. The position of January 1 relative to the winter solstice is an accidental by-product — it has no significance. —

4831:

difference, the interval is 73 034 days 17:15:34. Converting the time to days the interval is 730 34.719 144 days. That gives a vernal equinox year averaged over the period of 365.173 596 days. Of what possible use is this value?

4206:

The same way that the mean tropical year was measured. These values are constantly changing, so any quoted figure must be an average of measurements. I agree that it is spurious accuracy to give any of these figures to 1/20 second.

6240:

When italics could cause confusion (such as when italics are already being heavily used in the page for some other purpose, e.g., many non-English words and phrases), double quotation marks instead may be used to distinguish words as

2391:

Before the Julian calendar was implemented in 45 BC, March in the Roman quasi-lunar calendar was usually a spring month, but the vernal equinox could occur on any day of the month. Julius Caesar also made March a spring month in his

5180:

the the supporting sentence and its referent, the noun phrase "365.2425 days" in the main sentence; such "clearing the trees" is always an advantage to prevent confusion as to which is the referent of a modifying phrase or clause.

3063:

For comparison, the tropical year is decreasing at a rate of 0.53 seconds per century (530,000 microseconds per year) due to an increasing precession rate. This is 5 orders of magnitude greater than the variation under discussion.

639:

The Gaussian Year, however, being dependent solely on the Gaussian constant which is a fixed value not dependent on SI, seems at first to be in astronomers' units; but Kaye & Laby says that astronomers' seconds are SI seconds.

4517:

accumulate to about 0.5 s. Thus, we can get away with giving the length of a tropical year to 4 decimal places without specifying which kind of day we are using, but any further precision will require that the timescale be given.

1599:

The sidereal day was computed by "freezing" the earth axis of mid-winter 1997/1998 and using the projection of this "frozen" earth axis on the osculating orbital (ecliptic) plane. 39 such "years" added up to 14244.9904 SI days =:

307:

To find out when the next Gregorian calendar year occurs that is identical to the current one, you need to know the number of the current year (e.g., 2008). Calculate three quantities: the remainder after dividing by 4 (call it

4333:). Perhaps you have access to the details of the calculation, or are able to do it yourself from published parameters. The precise figure of 365.242374 was calculated by Jean Meeus using data from the Bureau des Longitudes. 4770:

We need to consider over what variables the mean is taken. In the case of the Newcomb and similar equations, it is the mean over all points of the tropical zodiac. You are correct that if the year length is averaged over

6043:

I agree with the removal of the ancient E notation, though it is still seen on some calculators, but should we not retain long-scale words for our international readers who use the words billion and trillion differently.

2457:

directly (it should be 6.3 microseconds instead of 1.25 microseconds) but that would screw up the note citation and I am not sure how that should be handled. I wrote an answer on Quora here that explains my calculations:

3796:

None of the above. It's the time between corresponding solstices and equinoxes (nearly always the spring equinox). This is currently 365.2424 days, so 365.2425 is an excellent approximation, but there is the problem of

4520:

The only source I have seen for the mean interval between vernal equinoxes is the 1992 paper by Meeus and Savoie; they don't give a specific explanation of how they calculated the mean interval between vernal equinoxes.

2151:"The precession of the equinoxes" is the cause for the tropical year to be 20 minutes shorter than the sidereal year. But it has nothing to do with the fluctuations of the durations of the different (subsequent) years. 200:

For a common year, step forward a year at a time, counting one for each common year passed and two for each leap year, until you reach a common year at a count which is a multiple of 7. That will be 6 or 11 or 12 years

3918:). The length of a year has varied in the number of days assigned to it, and in the length of those days, but it has always been defined in terms of the equinoxes and solstices (nearly always the spring equinox). 2225:

The shortening of the year due to the decreasing Sun mass is a theoretical construction beyond any possible observability! "nano-seconds"/ "atto-seconds", forget about this when the year varies with +-25 minutes!

112:

24.110.43.34 was trolling this page (length of a year changed in all instances to aprox 100 days) and when I checked his edit log, all edits were vandalism, as such I request that this user is blocked by an Admin

5367:

Thank you for your improvements to the article. I wonder whether the "mean astronomical equinox" is just a confusing diversion from this topic. It's a technical construct that has little relation to reality.

671:

because it has nothing to do with satanic 6*6*10, and is defined as God's 7 days *7 weeks *7 seasons. God purposedly instituted draconic year in Solar System to give chance of avoiding satanic multiples in time

2023:

recurs with a decreasing period from year to year; an event moving toward aphelion recurs with an increasing period from year to year (though this effect does not change the average value of the length of the

1464:

The mean tropical year is 365.242 UTC days, the yearly variations in the order of +- 20 minutes The mean sidereal year is 365.255 UTC days, the yearly variations again (obviously same as above!) +- 20 minutes

4462:

I'm actually interested in both equinoxes: northward equinoxes 365.242374 days in a year and southward equinoxes 365.242018 days. The vernal one is of most interest because many calendars are based on this.

1263:

Sounds like bogus to me. The only lengths of a tropical year I have heard of are the refinements of the original Julian year length -- i.e. close to (and never larger than) 365.25 days (whatever a day is).

2722:

per year). REF: Solar mass is ~2×10 kg, decreasing at ~5×10 kg/s, or ~8×10 solar mass per year. Consider a circular orbit of radius r, velocity v, period T and primary mass M. Orbital angular momentum is

2216:

magnitude. On top of these periodic variations one could possibly discuss theoretical non-periodic orbital period changes of extremely small size, for example the loss of Solar mass due to radiation etc.

5229:'implication' was not what I intended of course, but I can see how my wording might 'imply' it for someone of your expertise in the subject. My intent was much simpler, but of no need now. Regards // 3865:

I won't try to defend the current lead. However, whenever any time is defined, or any time period is given to high precision, it is mandatory to state what kind of seconds the value is given in. The

1046:

It is 2010 and the tag is still in place. I'm lifting it for lack of sufficient interest to pursue combined with a view that there is scientific usage for annum in geology and other fields. Cheers -

932:

It seems to me that Annum is just a scientific synonym of "year", and therefore Annum should just redirect here, with any of its salvageable content moved here. The current article reads to me like

104:

This also has an impact on the alinement of planets the ancients saw when the looked up at the sky. Does anyone know if celestia takes this into account when calculating historical star chart data?

3691: 1179:

I'm surprised there is no mention on the page, the universally accepted estimate of the number of days in a year. The article should at least mention it somewhere, does anyone else second that? --

6289: 5247:@Jc3s5h: This page contains some severely elliptical passages, which I am trying to improve by interpreting and adding context for the lay reader; here is one more---for which I ask your help: 3365:

the date format for publication dates as DD Month YYYY, although dates in the body of the article put the month before the day. At the same time he created inconsistency in access date formats.

650:

to mark all exact values with "exactly" or similar, and all approximate values with a numerical uncertainty or with "approximately" or similar (the Gaussian year could be put as "exactly 2π/k").

5407:

equinox" in the revised text, because, in the previous text, they are treating the same entity; I attempted to clarify that point to the lay reader---that they refer to the same entity---namely:

598:

TP: I don't see anything factually wrong in that section; you are correct that the year length is a derived value, but this page does not imply otherwise. What exactly do you object against?

140:

to bloom, you know that's the start of that flowers "season". I also added "the first scheduled game of a certain sport" to throw in a man-made seasonal year example into the mix. Comments?

2222:"Tidal drag" makes no sense, the duration of the year is measured with SI time, otherwise these small changes are completely neglectable/non-observable. Which they are even with atomic time! 6438: 5438:. That's why I moved it out of the 'middle of things' to the end of the paragraph, and I would agree to delete it entirely. Let's hear from others who may explain its connection. // Regards, 4584:

spurious, but I don't understand your claim that the value calculated by the VSOP87 method is "too far out". We seem to be arguing at cross-purposes and discussing different calculations.

5644:

You meant "calculated", not "apparent". It isn't a very useful concept; being a theoretical astronomers construct, it bears little relation to reality. Anyway, I thought you were banned?

189:. When in the future will the 2005 calendar be repeated, like August 12 will be friday and all other days will be the same week day as in 2005? When in the past was it repeated like that? 2843: 5414:

The "astronomical equinox" is moving towards its mean date (in 1983 the "mean equinox" fell at 1.48 AM GMT on 23 March, though the actual equinox that year was on 21 March). <PREV

2768: 6082: 4979:

links to "Parts per million". I don't seem to find a reason why "Parts per million" would relate to the sentence – hence, I think it's a mistake. I don't know what the writer meant by

2708: 5259:, currently does a better job than the Gregorian in synchronizing with the mean tropical year. As 218 out of every 900 years are leap years, the average length of this Julian year is 6573:

365.2422 is not the orbital period, but the tropical year (which is what the word "year" without qualifiers actually refers to, the entire first part of the article is quite wrong).

4973:

The mean length of the calendar year is 365.2425 days (as 97 out of 400 years are leap years); this is within one ppm of the current length of the mean tropical year (365.24219 days)

4524:

For most of the 20th century the mean tropical year (or just "tropical year") used by astronomers was that derived by Newcomb in the 1998 (Vol. 6, "Table of the Four Inner Planets",

185:

I think it would be nice to have information regarding calendar repetition, that is, is there a way to tell when is this year's calendar going to be repeated? For example, 2005 is a

5165:

which supports the main clause/sentence is integral, not parenthetical, to the meaning of that main clause: hence the parentheses are wrong---which is why I first noticed it; and

2798: 6473:

it would be nice to have the actual number for the orbital period (365.2422) when it is mentioned to compare to the 400 year average approximation of 365.2425. Also, add citation

2111:

However, what is given as "reason 1" is just one of the effects (manifestations!) of "reason 2" what in reality is the only (significant!) reason for these variations (changes)!

6540:. I fear any more repetition would risk wearying the reader, or even perplexing them (Why am I being told this again? Is it somehow different from the last time I was told it?). 5708:"The mean vernal equinox is the moment when, in the course of its calculated mean motion relative to the Earth, the sun crosses the celestial equator in a northerly direction." 2884: 1960:

The other 4 reasons mentioned are practically not detectable or at least of a completely other order of magnitude! If they should be metioned at all this should be pointed out!

700:

A comprehensive proof of evilness of these unholy numbers such as 6,60,90,180,270,360,666,3600,6666, which refuses to be completed up to multiples of holy seven is placed here:

6491:

Actual number in which year? The whole point of taking a 400 year average is to even out the occasional tiny gravitational ripples that affect the seventh significant digit. --

1311:

I have removed the term "Platonic year" because no source was cited for it and the sources I can find do not agree with each other. The most plausible source I found so far is

3841:

A year is today defined according to the Gregorian Calendar, a predecessor of the Julian Calendar. But also other definitions have been used through the times - from Egypt to

3437:

claimed variation for solar mass loss, so I don't feel this qualifies as one of the main sources of variation, which is what the first line of the section claims to describe.

6557:

the citation at www.grc.nasa.gov suggested by Zectbumo is a NASA educational website and is less precise and less rigorous than the other references included in the article.

6074: 80:

It does seem to now: perhaps editted since your undated comment? As it looks out of date, lets agree if you do not repeat it within a month of this query I'll do a clean-up

5614:"The mean vernal equinox is the moment when, in the course of its apparent mean motion round the Earth, the sun crosses the celestial equator in a northerly direction." 2979:

using the WolframAlpha link acceptable?) or can I be trusted to do that multiplication and unit conversion correctly. Advice please? FrankH 03:50, 3 October 2012 (UTC)

1687:

thousands of year this is a limited interest for us living here and now. We are left with the fact that duration of the different years varies with about +- 25 minutes.

5985: 5981: 5967: 5865: 5861: 5847: 5273:

days, than is the Gregorian mean, 365.242 5 days. In the year 2800 CE, the Gregorian and Revised Julian calendars will begin to differ ------by one calendar day------.

6288:

The short article under "Abbreviations for "years ago" is perfect - thank You!!" - however, regrettably too less known by those linguistically incompetent geologists.

5403:

mashed together the term "mean astronomical equinox"---ie, I changed the subject labels "astronomical equinox" and "mean equinox" to "astronomical equinox" and "mean

2079:

and radiation of energy generated by nuclear fusion and radiated by its surface, will affect the Earth's orbital period over a long time (approximately an extra 1.25

6594:

orbital period given how this will tend to dwarf the precession rate. The section with astronomical definitions is all well and good, but doesn't excuse the intro.

6543:

For which particular statement in the article should we add that citation? At first glance everything we say is already fairly clearly supported by our references.

3022: 3016:

The secular effect of the Sun’s loss of mass was traditionally omitted (Guinot 1989, Newhall et al 1983, Standish 1995) or given only brief mention (Brumberg 1991)

795:

Doesn't God essentially run a Dictatorship? T'was apparently the deveil who gave humans freedom of thought.... Anyway 666 isn't really the Devil's number. Pwnd. --

6442: 5205:. Finally, actual and proposed calendar changes have involved religious and logistical issues, which might make prevent gaining consensus for any proposed change. 2462:

the full explanation with conservation of angular momentum won't be as concise as the current note. Thanks for your help. FrankH 12:08, 1 October 2012 (UTC)

4404:

equinoxes" is a joke. If you're calculating the length of the vernal equinox year the only equinox whose precession you are interested in is the March one.

1839:, where the Earth is farthest from the Sun (July 4 in 2011). The anomalistic year is usually defined as the time between two successive perihelion passages. 4320:

Yes, I thought you were going to say that. You will be aware that your formula was not available to the originators of the Gregorian calendar who used the

1422:

I repeated exactly the same computations for the sidereal year 10 years later, i.e for 2010. This sidereal year was 365 days 6 hours 8 minutes 28 seconds.

1607:

I do not doubt that evaluating the approximate analytical formulas used one gets the values presently in the article but the real significant accuracy is

1951: 1442:

I have edited the article to limit the precision to hundredths of a second, which matches the source that was used in the main article for that section,

1794:

is the time taken for the Earth to complete one revolution of its orbit, as measured against a fixed frame of reference (such as the fixed stars, Latin

601: 512: 2603:? Is the conversion of units from 59 years/trillion centuries to 51 nanoseconds/year too obscure? It seems like basic arithmetic, which is exempt from 2159:

the sidereal years!). This could be mentioned although these fluctuations are much smaller then those caused by the gravitation of the other planets!

1349:

This article covers too many years, including many that do not even have dates, to warrant such a minor historical detail for a specific calendar. See

3432:" section. The largest claimed variation in the removed items was 5.8 μs per year for loss of mass from the Sun. But, using the method indicated in 2565: 2097: 6077:. That page calls for only using short scale. On this page, the exponential notation and the use of SI prefixes removes any ambiguity. Also, since 2679:

per year). REF: Solar mass is ~2×10 kg, decreasing at ~5×10 kg/s, or ~8×10 solar mass per year. The period of an orbiting body is proportional to

455:

It certainly does not. It simply finds the next time one of the 14 calendars mentioned by Peter 2005 is repeated, which is all that was asked for.

6269:

If you add up the days in a non leap year there's only 364 days in a year and 365 in a leap year. Just add up the days on your calendar yourself!

2019:

The precession of the equinoxes changes the position of astronomical events with respect to the apsides of Earth's orbit. An event moving toward

1604:

Both values agree but in the article much too many decimals are given considering that a typical variation of individual years is +- 20 minutes.

3754:

The average length of day in the Gregorian calendar is 365.2425. But there are many kinds of years, many of which are described in the article.

6270: 5470: 4999: 516: 154: 4549:. I have used Fourier series professionally in electronics; they are useful for separating short-period fluctuations from long-term trends. 6595: 6574: 5713: 5621: 4832: 4737: 4623: 4566: 4405: 4271: 4165: 4076: 3781: 3740: 1966:

The variations of the duration of a year depends on the gravitational effect of the planets (secular and periodic orbital perturbations!)!

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I think that would make the article far more useful, particularly to people with no background in astronomy. I hope this suggestion helps.

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Actually, the difference between the two equinoxes is 730484.719144 days, resulting in a mean vernal equinoctial year of 365,242360 days.

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I suggest a mention of the starting dates for Gregorian and Julian year numbers. In England before 1752, the numbering changed in March.

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Still, as a lay reader the concept is meaningless to me---and confusing because its context (or importance) within the larger subject is

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Have I interpreted the last sentence correctly; ie, is 'one calendar day' correct as the 'difference' alluded to? Thanks and Regards, //

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I defer to you who have expertise in this subject; (my background is engineering/science and much tech writing/editing). Note well: -->

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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

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Likely it was once at the winter solstice and drifted because of imperfect observations, sloppy record-keeping, who-knows-what. —

2136:, on the Earth." That says to me that perturbation by other planets is not "the only (significant!) reason" for the precession. — 796: 770:

Honeybees are domestified wasps, and all dangerous animals came after original sin. Before original sin they yet didn't existed.

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The increasing length of the mean period of earth's rotation on its axis, as measured in SI seconds, is clearly observable. See

6496: 6458: 6370: 4540:, v. 282, pp. 663–683). The paper is available through the NASA Astrophysics Data System, and is the one currently used by the 3956:

On second thoughts, I'm being very "earthist" in my viewpoint. For other planets, the term "year" is used in different ways.

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until 1983. These solutions involved a transformation of coordinates or variables from Cartesian or spherical to the six

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I still prefer the Kaye&Laby statement as a description of the Gaussian Year, but it is less direct as a definition.

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I wrote a reply, but decided that, in view of investigations elsewhere, it would be politic to refrain from posting it.

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Isn't a year is 365.24 days, not .25 days, the reason way every hundred years we drop a leap year (but not every 400)?

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duration of the years (defined as "sidereal" as well as "tropical") will because of this vary with about +- 25 minutes.

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As 97 out of every 400 years are leap years, the mean length of the calendar year is 365.2425 days; this is within one

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This is a highly speculative figure of some scientist that is not really verified by actual observations. Note that in

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The Earth orbit varies by a chaotic way, but in a interval quite more reduiced than the orbits of the nearest planets.

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the Scale of the Solar System", Celest. Mech. Dynam. Astron. 0801: 3807, arXiv:0801.3807, Bibcode 2008arXiv0801.3807N

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The sun does not move round the Earth. It only apparently does so. I take your point, however, and would suggest

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in the tropical year. Moments ago I ordered the newly-published 3rd edition; maybe that will say something helpful.

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Yeah, I'm still working on that. The full almanac's more detailled, but the web glossary's more accessible. Perhaps

6492: 6454: 6366: 2525:" contains a reasonable summary of verifiable or common-knowledge information from the deleted section, or in the " 38: 6318: 5127:

The mean length of the calendar year is 365.2425 days (as 97 out of 400 years are leap years); this is within one

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has just come out and I compared to the tropical year values in that. I am now adding the results to the article.

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seems relevant, although it is poorly referenced and the definition of terms doesn't answer the questions I have.

2289:(melting of ice etc) counteracts this spin rate caused by torque from the Moon/Sun gravitation on the tidal bulb. 1403:

In the text it is said that the average value for a "sidereal year" is 365 days 6 hours 9 minutes 9.7676 seconds

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to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the

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to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the

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In order for this article to reach B-class for WikiProject Measurement, you need more citations and references.

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By the way, the results of your computations are not suitable for inclusion in the Knowledge (XXG) article (see

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The present Wiki section on "Gaussian Year" is not adequate (the length is a result; it is not the definition).

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tropical/sidereal years are practically error-free! But my averages are just averages of 39 consecutive years!

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The calculation he wants to put in is available in a publication, which could be a personal web site or Quora.

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Using the JPL planetary ephemerisis I computed the averages from mid-winter 1998/1999 to mid-winter 2037/2038

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equinox" fell at 1.48 AM GMT on 23 March, but the actual vernal equinox that year was on 21 March. <RVSD

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confirm experimentally, or what was important enough to be in an encyclopedia article. I deleted the section.

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Likely because a gigayear is just 10E9 years and is no more special than 2 years, 3 years or even one year.

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This "sidereal year" was therefore precisely 365.2538951 SI days or 365 days 6 hours 5 minutes 36.5 seconds

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If you have discovered URLs which were erroneously considered dead by the bot, you can report them with

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If you have discovered URLs which were erroneously considered dead by the bot, you can report them with

5871: 5799: 5108: 5093: 3411: 3376: 3348: 2612: 2573: 1339: 1051: 1018: 969: 894: 654: 589: 250: 5934:. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit 5824:. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit 3690:

Simon, J.L.; Bretagnon, P.; Chapront, J.; Chapront-Touzé, M.; Francou, G.; Laskar, J. (February 1994).

2285:"over many centuries tidal friction inexorably slows Earth's rate of rotation by about 2.3 ms/day/cy" 2155:

on the other hand causes some fluctuations of the durations of the different tropical years (obviously

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gives the IERS value for the mean sidereal year, 365.256363004 days. Similarly on page 678 calculating

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Much better solution would be adopting septenary 343-day year derived from draconic year defined here:

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clauses of the original sentence causes it to make the new implication such as you claim. Regards. //

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I think it would be useful to include this in the article, if no one has any objection to the method

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https://web.archive.org/web/20100307191635/http://www.orau.gov/sciencebowl/teams/files/astrset2.pdf

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Meanwhile, the "astronomical equinox" continues to move towards its mean date; in 1983 the "mean

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The numerical methods with JPL ephemeris I use give the highest accuracy that can be achieved! My

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U.S. Naval Observatory Nautical Almanac Office and Her Majesty's Nautical Almanac Office (2010).

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U.S. Naval Observatory Nautical Almanac Office and Her Majesty's Nautical Almanac Office (2000).

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the vernal equinox in the ecliptic plane which is different for different years (relative ICRS)!

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to mark every expressed duration as "mean solar days" or "SI days" or whatever it happens to be;

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before doing mass systematic removals. This message is updated dynamically through the template

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before doing mass systematic removals. This message is updated dynamically through the template

2008:

The exact length of an astronomical year changes over time. The main sources of this change are:

1983:

You seem to be saying that the two quoted assertions cannot both be true. I don't see why not. —

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Times are in ephemeris time deviating from UTC with about a minute (depending on leap seconds!)

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86,400 SI seconds, and I am not aware of any other institution having claimed to do so either.

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https://www.grc.nasa.gov/www/k-12/Numbers/Math/Mathematical_Thinking/calendar_calculations.htm

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Thanks, AstroLynx, I was trying to work out what was wrong with 156.61.250.250's arithmetic.

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The Noerdingler paper has been published and is already referenced twice in Knowledge (XXG).

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of the polar axis of the Earth this year is about 20 minutes shorter then the sidereal day.

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is working well in this case. But you haven't yet addressed my concerns about OR and SYN.--

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Astronomical Papers Prepared for the Use of the Astronomical Ephemeris and Nautical Almanac

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Write unit names and symbols in upright (roman) type, except where emphasizing in context.

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left. This seems perfectly intuitive, so without a source cited, that line should vanish.

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is based on the fact that the average tropical year is slightly shorter then 365.25 days.

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average sidereal year 365.2562 SI days. In the article the value given is 365.256363004.

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average tropical year 365.2424 SI days. In the article the value given is 365.24219 days.

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It is said under the title "In international calendars" in the section "Civil year" that

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What is the source for your article? I would like to (critically!) examine its contents!

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I don't think the goal here should be humor, especially of the kind that isn't humorous.

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https://web.archive.org/web/20100304195312/http://aurora.regenstrief.org/~ucum/ucum.html

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was 0.0°. Perhaps some discussion of these historical matters belongs in the article.

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is irregular with absolutely no detectable tendency of a systematic spin rate decrease.

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So : in the Year page, I now think that, for the avoidance of doubt, it would be well :-

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If and only if no missing leap year would be passed, a leap year repeats after 28 years.

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He has published in the general area in reliable publications (usually, peer-reviewed).

2402: 2347: 2190: 2059: 1759: 1719: 1666: 1659:. JPL stated that the mean sidereal year of DE200 was 365.25636300 days on page 300 of 1575: 1389:

The Earth was at its pericenter MJD 2.22129411, i.e. 2000/01/03 05:18:39 ephemeris time

1366: 1253: 1222: 983: 941: 848: 561: 496: 267: 6173:... specifically, ], has no place in this article. I've removed it twice, so far. — 6010:

If you found an error with any archives or the URLs themselves, you can fix them with

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If you found an error with any archives or the URLs themselves, you can fix them with

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The value that was in the article till I removed it on Wednesday was 365.242374 days.

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I think that more people will be familiar with SI units than with Astronomers' units.

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Thank you; I have posted the (edited) edit. Let me if you see any glitch; Regards, //

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2) Fronting the adverbial clause causes no change in the meaning of the main clause,

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So can you please explain how this value was measured to an accuracy of 1/20 second?

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Orientation of the JPL ephemerides, DE 200/LE 200, to the dynamical equinox of J 2000

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the period that the equations are valid, a few thousand years around the present. —

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http://www.quora.com/Physics/Why-are-we-moving-away-from-the-sun/answer/Frank-Heile

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some consideration. But simply replacing the page with a redirect didn't cut it.

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I don't think this is the right page to discuss this. I suggest discussing it at

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I think it needs a "1 A.U." or equivalent, and a reference to the Sidereal Year.

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I don't understand what your are getting at, or where your comments are leading.

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Quite a deviation! Anyway, very misleading to give the seconds with 4 decimals!

1316: 1293: 1199: 1160: 1127: 1112: 940:, and the listed references don't really support the main body of the article.-- 747: 46:

If you wish to start a new discussion or revive an old one, please do so on the

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is the time taken for the Earth to complete one revolution with respect to its

5976:. No special action is required regarding these talk page notices, other than 5856:. No special action is required regarding these talk page notices, other than 3846: 3842: 2076: 2050: 2020: 2002:

as follows is given as if there were 6 different reasons for this phenomenon:

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of the year appears to change. Tidal drag in turn depends on factors such as

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There are many kinds of years. What kind of year is 365.242199 days and what

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All solar calendars with a leap year every four year and a 7-day-week repeat

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to avoid italics in general for "a" and using double quotes when necessary.

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The duration of a tropical year is 365 days 5 hours 49 minutes +- 25 minutes

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but that does not have the feel of a truly authoritative source in my mind.

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every 28 years (=4x7). But a additional leap year interrupts this so-called

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https://web.archive.org/web/20080520112256/http://aurora.rg.iupui.edu/UCUM/

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Newcomb's value to be correct. But Meeus and Savoie, as well as astronomer

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Today is Tuesday. Do you still intend to make the change on Wednesday? :P —

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The duration of a sidereal year is 365 days 6 hours 9 minutes +- 25 minutes

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I made a more complete analysis using the JPL ephemeris covering 15 years:

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A citation is needed before it can be added to the article. Don't use the

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I've never heard of any such calculations, just wondering if anybody has.

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periods of the radiation corresponding to the transition between the two

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Each planet's movement is perturbed by the gravity of every other planet.

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Each planet's movement is perturbed by the gravity of every other planet.

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this effect does not change the average value of the length of the year).

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Should there be a mention that on other planets the year is different? --

5176:. however, doing so (ie, fronting the adverbial clause) removes it from 2337:

Why does the year "start" at the position in Earth's orbit that it does?

2234:) for the Earth rotation) has been there from the start of atomic time! 2181:

actions of the other planets on Earth's perihelion or aphelion. (3) The

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Each of these three years can be loosely called an 'astronomical year'.

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By "the order of the masses" do you mean significant figures, or what? —

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article about the year; I just made a few small changes to this article.

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Proposed rewrite of section "Sidereal, tropical, and anomalistic years"

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gives the IERS value for the mean tropical year, 365.242190402 days. —

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I subscibe the proposed merge of this page with the page for the Year.

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is corrected for grammar once and improved twice by this sentence: -->

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I agree; thanks to Jc3s5h---he skin't that bear for us very well! //

3866: 1835:, where the Earth is closest to the Sun (January 3 in 2011), and the 3664:

simpler expressions, to compare to. Finally, the 3rd edition of the

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how the position, hence year, polynomials were determined, although

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would possibly illustrate these "+- 25 minutes" variations better!

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was probably used to fit scattered points to a polynomial curve. —

6131:, etc. all of which are a thousand times bigger than the American 5837: 5103:

Putting a blank line at the end of the last section restored them

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in the length of an "astronomical year" from the glossary entry.

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This is the part of the JPL ephemeris I have handy! (1999 - 2026)

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precession formulae and mean elements for the Moon and planets",

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precession of separate equinoxes (similar to the calculations in

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and the orbital angular momentum must be conserved which implies

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They do vary, seconds or even fraction of seconds make no sense!

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We have lots of European readers who might not be familiar with

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there is no trace of a spin rate decrease! The insertion of UTC

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direction to the Sun takes its south-most value. Because of the

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location" of where it was "reported" from as well as the time.

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days, which is closer to the length of the mean tropical year,

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Only pharisee can apply satanic etiquette to God's 7*7*7=343.

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Date format for publication dates in citations: DD Month YYYY

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The section "Variation in the length of the year and the day"

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For all the years from 1901 to 2071, all you need to know is

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The orbital period is mentioned but not given for comparison

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365.2425/365.24219 ≅ 1.00000085, or 0.85 parts per million.

1782:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 584:

http://www.kayelaby.npl.co.uk/general_physics/2_7/2_7_2.html

509:

Why is gigayear redirected here if theres nothing about it?

4653:

Marking Time: The Epic Quest to Invent the Perfect Calendar

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for additional information. I made the following changes:

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for additional information. I made the following changes:

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I have determined that the poor wording was introduced in

3723:. Washington: U.S. Government Printing Office. pp. C2, L8. 889:

Can you please tell us where in the article that text is?

5343:, Vol. 32, p.407. Courtesy NASA Astrophysics Data System. 3343:

The citation style for this article was established with

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Are honeybees satanic too, with their hexagonal cells? —

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and four consecutive common years (xx00-xx03) count as 4.

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http://www.orau.gov/SCIENCEBOWL/teams/files/astrset2.pdf

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Thank you. I'm in full agreement with that judgement.

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here, from which these variations have been ironed out.

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http://curious.astro.cornell.edu/question.php?number=168

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is equal to 94, 95, 99, or zero, the next is in 6 years.

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is equal to 90, 91, 97, or 98, the next is in 12 years.

6085:, I think international readers have learned to cope. 6075:

Knowledge (XXG) talk:Manual of Style/Dates and numbers

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Why does this article have no foreign language links?

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I removed three minor sources of variation from the "

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Date format for access dates in citations: YYYY-MM-DD

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I recognize Standish who is deeply involved with the

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The year increase due to solar mass loss is incorrect

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equals 0, the next identical calendar is in 28 years.

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citations needed, but I'm pretty sure that it's true

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Changes in the effective mass of the Sun, caused by

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Year#Variation_in_the_length_of_the_year_and_the_day

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The following statement was added to the article by

316:), and the remainder after dividing by 400 (call it 5980:using the archive tool instructions below. Editors 5860:using the archive tool instructions below. Editors 5119:

Reply re "implies ..."; ..and a request for consult

4776:J2000, the vernal equinox year is 365.2424 years. 2845:and therefore to conserve orbital angular momentum 2493:FrankH should not cite his own calculations unless 2209:I think this section should be completely removed! 1385:I just made a check using JPL planetary ephemeris: 903:Search the article for the word 'chaotic': it's in 668: 377:is greater than 300 or equal to zero. It holds for 6361:: makes sense, given that the relevant article is 3666:Explanatory Supplement to the Astronomical Almanac 2878: 2837: 2792: 2762: 2702: 1613:These analytical formulas are only approximations! 5174:anything different from the mid-sentence position 5150:of the current length of the mean tropical year ( 5131:of the current length of the mean tropical year ( 3351:. Since then inconsistency has been introduced. 2568:for the explanatory supplement is a better basis. 1090:Yes, the cycle of seasons is the tropical year. — 492:"some scholars". Cite which scholar or scholars. 6524:We provide many comparative figures, such as in 6081:uses billion with the same meaning as in the US 5776:, Her Majesty's Stationery Office, London, 1982. 4028:Actual calendars are not based on this "year". 3358:the date format for access dates as YYYY-MM-DD. 381:other years as well, the only exceptions being: 312:), the remainder after dividing by 100 (call it 5478: 3430:Variation in the length of the year and the day 3023:Jet Propulsion Laboratory Development Ephemeris 2205:Variation in the length of the year and the day 243:http://www.merlyn.demon.co.uk/weekinfo.htm#NYST 6534:Year#Sidereal, tropical, and anomalistic years 6205:But units normally should receive no italics: 5966:This message was posted before February 2018. 5846:This message was posted before February 2018. 3714:. Washington: U.S. Government Printing Office. 1392:The Earth was back to the same angle relative 1198:says this estimate is universally accepted? -- 484:(AM) and 12 hours of increasing darkness (PM). 5958:http://aurora.regenstrief.org/~ucum/ucum.html 4732:Indeed it will, but we are talking about the 3718: 3709: 2710:, where M is the mass of the primary. :ENDREF 2357:I believe that comes from Roman pre-history. 1492:http://wgpqqror.homepage.t-online.de/year.txt 683:343-day years, why establish a 346-day cycle 95:http://www.sciencedaily.com/encyclopedia/year 8: 3381:Date format for article body: Month DD, YYYY 3122:arXiv:0801.3807, Bibcode 2008arXiv0801.3807N 3011:The Noerdlinger paper contains this passage: 6589:The introduction clearly needs some changes 6303:Semi-protected edit request on 18 June 2022 6391:Talk:Hijrah#Requested move 9 February 2022 5816:I have just modified one external link on 5790:WikiProject Measurement: Citations needed! 5615: 5355: 3998: 3684:Numerical value of year variation: sources 3070:Time From Earth Rotation to Atomic Physics 2944:would appear to be a possible reference. 2838:{\displaystyle T\propto {\sqrt {r^{3}/M}}} 1952:Orbital perturbation analysis (spacecraft) 1649:(French article with English summary) and 1008:is completely unreferenced. The existing 669:http://en.wikipedia.org/Year#Draconic_year 392:equals zero, then the next is in 40 years. 5926:I have just modified 2 external links on 5337:"The New Calendar of the Eastern Churches 2870: 2861: 2850: 2825: 2819: 2813: 2805: 2783: 2775: 2763:{\displaystyle \propto rv\propto r^{2}/T} 2752: 2746: 2728: 2686: 2684: 2523:Sidereal, tropical, and anomalistic years 1488:Here are the results of my computations: 373:The above also holds for all years where 5473:. So I reverted to the previous version: 5360:Thread hijacked by sock of banned editor 3530: 3469:Mean year lengths, truncated at minutes 3467: 1611:3 to 4 decimals when expressed in days. 1355:Gregorian calendar#Beginning of the year 5766: 5328: 5210:I have edited the article accordingly. 2703:{\displaystyle {\tfrac {1}{\sqrt {M}}}} 1656:The observational basis for JPL's DE200 358:equals 2 or 3, the next is in 11 years. 6290:2A02:8108:9640:AC3:4DF8:A0AF:4F2D:BE71 6235:actually discourages it in this case: 5919:External links modified (January 2018) 5123:The original sentence in question: --> 4530:Astronomical Almanac for the year 2011 3721:Astronomical Almanac for the year 2011 3712:Astronomical Almanac for the year 2001 3434:Astronomical Almanac for the Year 2011 1365:on which the Julian calendar began. — 663:Draconic years instead of 365 day year 172:Astronomical Year section reformatting 44:Do not edit the contents of this page. 6389:after checking histories and finding 5471:JPL Horizons On-Line Ephemeris System 3869:can be an SI second (the duration of 3347:by LeadSongDog in 2009. The style is 2714:I would propose that this change to: 1641:and VSOP for its French counterpart, 1111:specific counting is. Should I undo? 287:7 for common years, 7 for leap years. 7: 6439:2604:2000:2FC0:F:E123:5FF5:2949:5DEF 5023:corrected 13:20 UT September 3 2015. 2793:{\displaystyle r\propto {\sqrt {T}}} 1216:The mean tropical year according to 2336: 2084: 1842:If the Earth had been in a perfect 1754:Mass squared, mass cubed, etc. See 266:must repeat on a 400-year cycle. — 245:demonstrates the repeat intervals. 5170:nor does the new (front) position 3424:Removed minor sources of variation 1396:at MJD 367.47518921 ephemeris time 24: 5930:. Please take a moment to review 5820:. Please take a moment to review 3799:Fluctuations in the length of day 3452:Numerical value of year variation 351:equals 1, the next is in 6 years. 6409: 6380: 6310: 6231:would seem to allow italics but 3532:Length of year, seconds portion 3139:In the Solar Luminosity article 2879:{\displaystyle T\propto 1/M^{2}} 2675:...(approximately an extra 1.25 187:Common year starting on Saturday 29: 5838:http://aurora.rg.iupui.edu/ucum 5335:Shields, Miriam Nancy. (1924). 3118:In the Astronical Unit article 2718:...(approximately an extra 5.0 2134:to a lesser extent other bodies 1811:is "the period of time for the 1705:Newcomb's solution used by the 687:make it so far from obvious? — 6536:, plus a comparative table at 2599:Ok, I'll bite. What was wrong 2442:20:11, 28 September 2012 (UTC) 1945:The (secular) rotation of the 1862:The rule for the insertion of 1351:Julian calendar#New Year's Day 1: 6432:Colloquial use of word "sees" 5754:20:27, 20 February 2016 (UTC) 5722:17:32, 20 February 2016 (UTC) 5670:14:19, 20 February 2016 (UTC) 5630:13:35, 20 February 2016 (UTC) 5587:04:21, 17 February 2016 (UTC) 5563:21:20, 16 February 2016 (UTC) 5533:15:43, 15 February 2016 (UTC) 5501:15:32, 15 February 2016 (UTC) 5460:) 14:27 February 15, 2016 UTC 5394:09:10, 15 February 2016 (UTC) 5320:17:05, 14 February 2016 (UTC) 5302:12:18, 14 February 2016 (UTC) 5287:01:56, 14 February 2016 (UTC) 5058:07:31, 4 September 2015 (UTC) 5021:22:52, 3 September 2015 (UTC) 5004:21:52, 3 September 2015 (UTC) 4532:page L8, among other places. 3303:23:05, 7 October 2012 (UTC) 2367:19:39, 31 December 2011 (UTC) 2352:18:18, 31 December 2011 (UTC) 1042:11:39, 12 December 2008 (UTC) 857:08:33, 19 February 2008 (UTC) 840:06:47, 18 February 2008 (UTC) 500:01:00, 22 November 2006 (UTC) 163:20:21, 16 November 2010 (UTC) 6034:02:56, 22 January 2018 (UTC) 5239:03:48, 9 February 2016 (UTC) 5220:22:32, 7 February 2016 (UTC) 5195:21:46, 7 February 2016 (UTC) 5113:12:55, 20 January 2016 (UTC) 5098:12:47, 20 January 2016 (UTC) 4054:00:02, 16 January 2015 (UTC) 4011:23:11, 15 January 2015 (UTC) 3982:23:05, 15 January 2015 (UTC) 3944:22:30, 15 January 2015 (UTC) 3905:21:44, 15 January 2015 (UTC) 3860:21:43, 14 January 2015 (UTC) 3831:22:33, 15 January 2015 (UTC) 3678:13:01, 7 November 2012 (UTC) 3658:23:37, 11 October 2012 (UTC) 3447:21:40, 11 October 2012 (UTC) 3418:01:59, 12 October 2012 (UTC) 3400:20:59, 11 October 2012 (UTC) 3354:That same month LeadSongDog 2130:Axial precession (astronomy) 1302:15:10, 18 January 2010 (UTC) 1280:14:58, 30 October 2009 (UTC) 847:only as an average value. — 658:13:19, 30 January 2007 (UTC) 618:21:33, 29 January 2007 (UTC) 593:12:08, 29 January 2007 (UTC) 548:14:50, 30 October 2009 (UTC) 525:11:19, 12 January 2007 (UTC) 465:14:43, 29 October 2008 (UTC) 450:18:56, 28 October 2008 (UTC) 430:18:41, 28 October 2008 (UTC) 270:18:54, August 12, 2005 (UTC) 129:21:47, 10 January 2009 (UTC) 6337:to reactivate your request. 6325:has been answered. Set the 5079:04:18, 1 October 2015 (UTC) 5064:ya right-to-left convention 3790:23:07, 8 January 2014 (UTC) 3764:23:13, 8 January 2014 (UTC) 3749:22:59, 8 January 2014 (UTC) 3361:The next month LeadSongDog 3252:13:03, 4 October 2012 (UTC) 3082:12:31, 3 October 2012 (UTC) 3072:, Wiley-VCH, 2009, p. 18.) 3068:and P. Kenneth Seidelmann, 3049:12:19, 3 October 2012 (UTC) 2954:04:27, 2 October 2012 (UTC) 2935:00:19, 2 October 2012 (UTC) 2654:14:02, 2 October 2012 (UTC) 2642:Online Astronomical Almanac 2619:13:39, 2 October 2012 (UTC) 2595:20:53, 1 October 2012 (UTC) 2580:20:09, 1 October 2012 (UTC) 2560:20:03, 1 October 2012 (UTC) 2543:14:09, 1 October 2012 (UTC) 2513:13:47, 1 October 2012 (UTC) 2092:tag is missing the closing 1554:which is referenced by the 1258:12:42, 14 August 2009 (UTC) 1056:03:44, 6 January 2010 (UTC) 980:BOLD, revert, discuss cycle 295:12:51, 14 August 2005 (UTC) 6619: 6279:01:16, 14 March 2022 (UTC) 6159:13:03, 23 April 2018 (UTC) 6095:19:50, 22 April 2018 (UTC) 6068:19:02, 22 April 2018 (UTC) 5997:(last update: 5 June 2024) 5923:Hello fellow Wikipedians, 5877:(last update: 5 June 2024) 5813:Hello fellow Wikipedians, 5351:Mean astronomical equinox. 5163:adverbial dependent clause 4945:13:47, 25 April 2015 (UTC) 4883:13:43, 25 April 2015 (UTC) 4841:12:49, 25 April 2015 (UTC) 4802:11:20, 25 April 2015 (UTC) 4746:08:54, 25 April 2015 (UTC) 4712:18:45, 24 April 2015 (UTC) 4665:18:08, 24 April 2015 (UTC) 4632:17:28, 24 April 2015 (UTC) 4610:17:10, 24 April 2015 (UTC) 4575:14:33, 24 April 2015 (UTC) 4559:13:51, 24 April 2015 (UTC) 4538:Astronomy and Astrophysics 4489:14:09, 24 April 2015 (UTC) 4414:13:12, 24 April 2015 (UTC) 4359:12:13, 24 April 2015 (UTC) 4280:09:37, 24 April 2015 (UTC) 4233:09:13, 24 April 2015 (UTC) 4174:08:14, 24 April 2015 (UTC) 4136:19:22, 23 April 2015 (UTC) 4085:18:24, 23 April 2015 (UTC) 3699:Astronomy and Astrophysics 3372:Spelling: American English 1231:05:37, 3 August 2009 (UTC) 1208:22:23, 2 August 2009 (UTC) 1189:22:18, 2 August 2009 (UTC) 1106:Question on being Reverted 936:, or at least an original 716:08:21, 10 April 2007 (UTC) 677:10:24, 15 March 2007 (UTC) 241:Check those. Page section 6604:15:46, 29 June 2023 (UTC) 6583:15:39, 29 June 2023 (UTC) 6426:17:32, 18 June 2022 (UTC) 6403:15:39, 18 June 2022 (UTC) 6375:12:55, 18 June 2022 (UTC) 6353:12:43, 18 June 2022 (UTC) 6260:06:31, 30 June 2021 (UTC) 5914:22:49, 12 June 2017 (UTC) 5804:18:32, 18 July 2016 (UTC) 5774:Astronomical Almanac 1983 5257:Eastern Orthodox Churches 2800:. Kepler's Law says that 2644:glossary entry for Year. 2331:16:32, 19 June 2011 (UTC) 2315:09:02, 19 June 2011 (UTC) 2271:revised 19 June 16:34 UT. 2269:19:33, 18 June 2011 (UTC) 2246:18:32, 18 June 2011 (UTC) 2199:08:42, 20 June 2011 (UTC) 2171:07:32, 17 June 2011 (UTC) 2146:06:24, 17 June 2011 (UTC) 2123:21:18, 16 June 2011 (UTC) 1993:19:14, 16 June 2011 (UTC) 1978:12:49, 16 June 2011 (UTC) 1916:08:14, 15 June 2011 (UTC) 1894:19:52, 14 June 2011 (UTC) 1879:16:50, 12 June 2011 (UTC) 1768:06:01, 26 June 2011 (UTC) 1746:11:38, 22 June 2011 (UTC) 1728:20:03, 21 June 2011 (UTC) 1699:18:13, 13 June 2011 (UTC) 1675:05:50, 13 June 2011 (UTC) 1631:09:39, 12 June 2011 (UTC) 1584:07:09, 12 June 2011 (UTC) 1541:20:22, 11 June 2011 (UTC) 1511:19:21, 11 June 2011 (UTC) 1484:18:52, 11 June 2011 (UTC) 1456:17:39, 11 June 2011 (UTC) 1437:16:33, 11 June 2011 (UTC) 1418:16:12, 11 June 2011 (UTC) 1381:Duration of sidereal year 1325:13:08, 9 April 2011 (UTC) 1175:365.242199 days in a year 1061:Too technical too quickly 1023:06:11, 14 July 2008 (UTC) 1000:22:25, 11 July 2008 (UTC) 974:05:53, 11 July 2008 (UTC) 958:04:31, 11 July 2008 (UTC) 805:11:36, 23 June 2010 (UTC) 692:05:35, 3 April 2007 (UTC) 566:23:05, 5 March 2012 (UTC) 6567:14:09, 28 May 2023 (UTC) 6553:13:47, 28 May 2023 (UTC) 6520:13:15, 28 May 2023 (UTC) 6501:12:26, 28 May 2023 (UTC) 6486:11:47, 28 May 2023 (UTC) 6463:10:06, 23 May 2023 (UTC) 6447:01:44, 23 May 2023 (UTC) 6343:Change Hegira to Hijrah 6298:06:28, 6 June 2022 (UTC) 6209:a = 31556925.445 seconds 6181:20:47, 8 July 2018 (UTC) 5520:User:Vote (X) for Change 2411:06:14, 28 May 2012 (UTC) 2383:04:52, 28 May 2012 (UTC) 2275:I looked at the article 1956:Perturbation (astronomy) 1716:least squares regression 1169:06:17, 29 May 2009 (UTC) 1153:23:45, 27 May 2009 (UTC) 1136:08:55, 26 May 2009 (UTC) 1121:06:03, 26 May 2009 (UTC) 1100:02:15, 18 May 2009 (UTC) 1085:10:28, 17 May 2009 (UTC) 917:22:51, 23 May 2008 (UTC) 899:10:24, 20 May 2008 (UTC) 884:06:26, 20 May 2008 (UTC) 775:07:52, 23 May 2007 (UTC) 756:06:45, 26 May 2009 (UTC) 746:(365+1/4)^2=3^7*61+9/16. 108:Block Request for Admins 6530:Year#Gregorian calendar 6507:Year#Astronomical tears 6265:1 Year is not 365 days. 6246:So I propose rewriting 5809:External links modified 5253:Revised Julian calendar 2430:celestial longitude (λ) 1375:22:54, 8 May 2011 (UTC) 1344:13:13, 8 May 2011 (UTC) 874:What does this mean? — 733:21:51, 3 May 2007 (UTC) 388:is greater than 71 and 255:18:48, 9 May 2011 (UTC) 89:22:25, 9 May 2004 (UTC) 6201:= 31556925.445 seconds 5483: 5084:Foreign Language Links 3018: 2880: 2839: 2794: 2764: 2704: 1159:That was a part of it. 6367:John Maynard Friedman 6168:365 Days of Astronomy 3014: 2881: 2840: 2795: 2765: 2705: 2321:detect the decrease. 1643:Connaissance de Temps 1556:IERS Useful Constants 1357:for dates other than 604:comment was added by 515:comment was added by 42:of past discussions. 6526:Year#Julian calendar 5978:regular verification 5858:regular verification 4542:Astronomical Almanac 3458:Astronomical Almanac 2849: 2804: 2774: 2727: 2683: 2056:post-glacial rebound 1707:Astronomical Almanac 1639:Astronomical Almanac 1637:2000, DE200 for the 1552:Simon et al. in 1994 1066:things any clearer. 586:should be reliable. 6186:No italics in units 5968:After February 2018 5848:After February 2018 5292:Yes, that's right. 4983:, though. Do you? 3533: 3470: 1711:osculating elements 471:Oriental great year 181:Calendar repetition 6022:InternetArchiveBot 5973:InternetArchiveBot 5902:InternetArchiveBot 5853:InternetArchiveBot 5255:, as used in some 4773:(and about a half) 3531: 3468: 2923:Apsidal precession 2876: 2835: 2790: 2760: 2700: 2698: 2398:Gregorian calendar 1942:Not very logical! 1813:ecliptic longitude 1287:Rough calculations 978:Fair enough. The 582:The definition in 135:Seasonal Year edit 93:the same is here: 6341: 6340: 6039:American billions 5998: 5878: 5786: 5785: 5756: 5632: 5620:comment added by 5462: 5448:comment added by 5341:Popular Astronomy 5007: 4990:comment added by 4774: 3917: 3780:comment added by 3769:What is a "year"? 3739:comment added by 3646: 3645: 3529: 3528: 3416: 3375:Citation format: 3324: 3310:comment added by 3200: 3186:comment added by 3000: 2986:comment added by 2912: 2898:comment added by 2833: 2788: 2697: 2696: 2617: 2578: 2483: 2469:comment added by 2297:Newcomb's formula 2232:Newcomb's formula 1925:Here it is said: 1270:comment added by 1245:recently informed 934:original research 842: 830:comment added by 706:Deuteronomy 30:19 621: 538:comment added by 528: 153:comment added by 119:comment added by 67: 66: 54: 53: 48:current talk page 6610: 6413: 6412: 6388: 6384: 6383: 6332: 6328: 6314: 6313: 6307: 6233:MOS:WORDSASWORDS 6156: 6065: 6032: 6023: 5996: 5995: 5974: 5912: 5903: 5876: 5875: 5854: 5777: 5771: 5750: 5749: 5746: 5743: 5740: 5737: 5734: 5727: 5666: 5665: 5662: 5659: 5656: 5653: 5650: 5559: 5558: 5555: 5552: 5549: 5546: 5543: 5461: 5442: 5390: 5389: 5386: 5383: 5380: 5377: 5374: 5356: 5344: 5333: 5272: 5271: 5265: 5264: 5156: 5155: 5137: 5136: 5054: 5053: 5050: 5047: 5044: 5041: 5038: 5006: 4984: 4941: 4940: 4937: 4934: 4931: 4928: 4925: 4798: 4797: 4794: 4791: 4788: 4785: 4782: 4772: 4708: 4707: 4704: 4701: 4698: 4695: 4692: 4606: 4605: 4602: 4599: 4596: 4593: 4590: 4485: 4484: 4481: 4478: 4475: 4472: 4469: 4355: 4354: 4351: 4348: 4345: 4342: 4339: 4322:Alfonsine tables 4229: 4228: 4225: 4222: 4219: 4216: 4213: 4132: 4131: 4128: 4125: 4122: 4119: 4116: 4050: 4049: 4046: 4043: 4040: 4037: 4034: 3978: 3977: 3974: 3971: 3968: 3965: 3962: 3940: 3939: 3936: 3933: 3930: 3927: 3924: 3915: 3884:hyperfine levels 3881: 3880: 3877: 3874: 3827: 3826: 3823: 3820: 3817: 3814: 3811: 3792: 3751: 3724: 3715: 3706: 3696: 3534: 3471: 3414: 3410: 3377:Citation Style 1 3349:Citation Style 1 3323: 3304: 3199: 3180: 2999: 2980: 2911: 2892: 2885: 2883: 2882: 2877: 2875: 2874: 2865: 2844: 2842: 2841: 2836: 2834: 2829: 2824: 2823: 2814: 2799: 2797: 2796: 2791: 2789: 2784: 2769: 2767: 2766: 2761: 2756: 2751: 2750: 2709: 2707: 2706: 2701: 2699: 2692: 2688: 2615: 2611: 2576: 2572: 2566:the book preview 2482: 2463: 2103: 2102: 2101: 2095: 2091: 1825:anomalistic year 1664: 1658: 1364: 1360: 1282: 825: 599: 572:Re Gaussian Year 550: 510: 165: 131: 70:Untitled section 63: 56: 55: 33: 32: 26: 6618: 6617: 6613: 6612: 6611: 6609: 6608: 6607: 6591: 6471: 6434: 6410: 6381: 6379: 6330: 6326: 6311: 6305: 6286: 6271:174.250.210.197 6267: 6215:MOS:UNITSYMBOLS 6188: 6171: 6137: 6046: 6041: 6026: 6021: 5989: 5982:have permission 5972: 5936:this simple FaQ 5921: 5906: 5901: 5869: 5862:have permission 5852: 5826:this simple FaQ 5811: 5792: 5787: 5782: 5781: 5780: 5772: 5768: 5747: 5744: 5741: 5738: 5735: 5732: 5731: 5663: 5660: 5657: 5654: 5651: 5648: 5647: 5556: 5553: 5550: 5547: 5544: 5541: 5540: 5443: 5387: 5384: 5381: 5378: 5375: 5372: 5371: 5361: 5353: 5348: 5347: 5334: 5330: 5269: 5267: 5262: 5260: 5161:namely: 1) The 5153: 5151: 5134: 5132: 5121: 5086: 5066: 5051: 5048: 5045: 5042: 5039: 5036: 5035: 4992:Notveryactive89 4985: 4969: 4938: 4935: 4932: 4929: 4926: 4923: 4922: 4795: 4792: 4789: 4786: 4783: 4780: 4779: 4705: 4702: 4699: 4696: 4693: 4690: 4689: 4603: 4600: 4597: 4594: 4591: 4588: 4587: 4482: 4479: 4476: 4473: 4470: 4467: 4466: 4352: 4349: 4346: 4343: 4340: 4337: 4336: 4326:Prutenic Tables 4226: 4223: 4220: 4217: 4214: 4211: 4210: 4129: 4126: 4123: 4120: 4117: 4114: 4113: 4047: 4044: 4041: 4038: 4035: 4032: 4031: 3975: 3972: 3969: 3966: 3963: 3960: 3959: 3937: 3934: 3931: 3928: 3925: 3922: 3921: 3878: 3875: 3872: 3870: 3839: 3824: 3821: 3818: 3815: 3812: 3809: 3808: 3775: 3771: 3734: 3731: 3694: 3689: 3686: 3454: 3426: 3412: 3341: 3305: 3181: 3066:Dennis McCarthy 2981: 2893: 2866: 2847: 2846: 2815: 2802: 2801: 2772: 2771: 2742: 2725: 2724: 2681: 2680: 2613: 2574: 2464: 2454: 2394:Julian calendar 2339: 2207: 2093: 2089: 2087: 2085: 1923: 1859:tropical year. 1776: 1660: 1654: 1383: 1362: 1358: 1332: 1309: 1289: 1265: 1241: 1196:reliable source 1177: 1108: 1063: 930: 865: 821: 665: 600:—The preceding 574: 533: 517:195.194.178.251 511:—The preceding 507: 473: 183: 174: 155:137.186.144.233 148: 137: 114: 110: 76:Daniel C. Boyer 72: 59: 30: 22: 21: 20: 12: 11: 5: 6616: 6614: 6596:51.175.156.113 6590: 6587: 6586: 6585: 6575:51.175.156.113 6571: 6570: 6569: 6541: 6522: 6503: 6470: 6467: 6466: 6465: 6433: 6430: 6429: 6428: 6407: 6406: 6405: 6365:not Hegira. -- 6339: 6338: 6315: 6304: 6301: 6285: 6282: 6266: 6263: 6244: 6243: 6225: 6224: 6211: 6210: 6203: 6202: 6187: 6184: 6170: 6165: 6164: 6163: 6162: 6161: 6040: 6037: 6016: 6015: 6008: 5961: 5960: 5952:Added archive 5950: 5942:Added archive 5920: 5917: 5896: 5895: 5888: 5841: 5840: 5832:Added archive 5810: 5807: 5791: 5788: 5784: 5783: 5779: 5778: 5765: 5764: 5760: 5759: 5758: 5757: 5714:151.226.185.90 5706: 5705: 5704: 5703: 5702: 5701: 5700: 5699: 5698: 5697: 5696: 5695: 5681: 5680: 5679: 5678: 5677: 5676: 5675: 5674: 5673: 5672: 5622:151.226.185.90 5612: 5611: 5610: 5609: 5608: 5607: 5606: 5605: 5594: 5593: 5592: 5591: 5590: 5589: 5570: 5569: 5568: 5567: 5566: 5565: 5506: 5505: 5504: 5503: 5485: 5484: 5476: 5475: 5474: 5440: 5439: 5431: 5430: 5429: 5428: 5418: 5417: 5416: 5415: 5409: 5408: 5363: 5362: 5359: 5354: 5352: 5349: 5346: 5345: 5327: 5326: 5325: 5324: 5323: 5322: 5305: 5304: 5275: 5274: 5246: 5244: 5243: 5242: 5241: 5223: 5222: 5207: 5206: 5159: 5158: 5140: 5139: 5120: 5117: 5116: 5115: 5085: 5082: 5065: 5062: 5061: 5060: 5027: 5025: 5024: 4968: 4965: 4964: 4963: 4962: 4961: 4960: 4959: 4958: 4957: 4956: 4955: 4954: 4953: 4952: 4951: 4950: 4949: 4948: 4947: 4900: 4899: 4898: 4897: 4896: 4895: 4894: 4893: 4892: 4891: 4890: 4889: 4888: 4887: 4886: 4885: 4856: 4855: 4854: 4853: 4852: 4851: 4850: 4849: 4848: 4847: 4846: 4845: 4844: 4843: 4833:156.61.250.250 4815: 4814: 4813: 4812: 4811: 4810: 4809: 4808: 4807: 4806: 4805: 4804: 4757: 4756: 4755: 4754: 4753: 4752: 4751: 4750: 4749: 4748: 4738:156.61.250.250 4721: 4720: 4719: 4718: 4717: 4716: 4715: 4714: 4672: 4671: 4670: 4669: 4668: 4667: 4639: 4638: 4637: 4636: 4635: 4634: 4624:156.61.250.250 4615: 4614: 4613: 4612: 4578: 4577: 4567:156.61.250.250 4547:Fourier series 4514: 4513: 4512: 4511: 4510: 4509: 4508: 4507: 4506: 4505: 4504: 4503: 4502: 4501: 4500: 4499: 4498: 4497: 4496: 4495: 4494: 4493: 4492: 4491: 4437: 4436: 4435: 4434: 4433: 4432: 4431: 4430: 4429: 4428: 4427: 4426: 4425: 4424: 4423: 4422: 4421: 4420: 4419: 4418: 4417: 4416: 4406:156.61.250.250 4380: 4379: 4378: 4377: 4376: 4375: 4374: 4373: 4372: 4371: 4370: 4369: 4368: 4367: 4366: 4365: 4364: 4363: 4362: 4361: 4299: 4298: 4297: 4296: 4295: 4294: 4293: 4292: 4291: 4290: 4289: 4288: 4287: 4286: 4285: 4284: 4283: 4282: 4272:156.61.250.250 4250: 4249: 4248: 4247: 4246: 4245: 4244: 4243: 4242: 4241: 4240: 4239: 4238: 4237: 4236: 4235: 4189: 4188: 4187: 4186: 4185: 4184: 4183: 4182: 4181: 4180: 4179: 4178: 4177: 4176: 4166:156.61.250.250 4149: 4148: 4147: 4146: 4145: 4144: 4143: 4142: 4141: 4140: 4139: 4138: 4096: 4095: 4094: 4093: 4092: 4091: 4090: 4089: 4088: 4087: 4077:156.61.250.250 4063: 4062: 4061: 4060: 4059: 4058: 4057: 4056: 4018: 4017: 4016: 4015: 4014: 4013: 3989: 3988: 3987: 3986: 3985: 3984: 3949: 3948: 3947: 3946: 3908: 3907: 3838: 3835: 3834: 3833: 3782:203.47.198.254 3770: 3767: 3741:203.47.198.254 3730: 3727: 3726: 3725: 3716: 3707: 3685: 3682: 3681: 3680: 3644: 3643: 3640: 3637: 3633: 3632: 3629: 3626: 3622: 3621: 3618: 3615: 3611: 3610: 3607: 3604: 3600: 3599: 3596: 3593: 3589: 3588: 3585: 3582: 3578: 3577: 3574: 3571: 3567: 3566: 3563: 3560: 3556: 3555: 3552: 3549: 3545: 3544: 3541: 3538: 3527: 3526: 3523: 3520: 3517: 3513: 3512: 3509: 3506: 3503: 3499: 3498: 3495: 3492: 3489: 3485: 3484: 3481: 3478: 3475: 3453: 3450: 3425: 3422: 3421: 3420: 3389: 3388: 3385: 3382: 3379: 3373: 3340: 3339:Citation style 3337: 3336: 3335: 3334: 3333: 3332: 3331: 3330: 3329: 3328: 3327: 3326: 3325: 3289: 3288: 3287: 3286: 3285: 3284: 3283: 3282: 3281: 3280: 3279: 3278: 3263: 3262: 3261: 3260: 3259: 3258: 3257: 3256: 3255: 3254: 3230: 3229: 3228: 3227: 3226: 3225: 3224: 3223: 3222: 3221: 3208: 3207: 3206: 3205: 3204: 3203: 3202: 3201: 3169: 3168: 3167: 3166: 3165: 3164: 3163: 3162: 3151: 3150: 3149: 3148: 3147: 3146: 3145: 3144: 3130: 3129: 3128: 3127: 3126: 3125: 3124: 3123: 3109: 3108: 3107: 3106: 3105: 3104: 3103: 3102: 3091: 3089: 3088: 3087: 3086: 3085: 3084: 3056: 3055: 3054: 3053: 3052: 3051: 3031: 3030: 3029: 3028: 3027: 3026: 3019: 3012: 3004: 3003: 3002: 3001: 2973: 2972: 2971: 2970: 2964:Dragons flight 2957: 2956: 2946:Dragons flight 2938: 2937: 2919: 2918: 2888: 2887: 2873: 2869: 2864: 2860: 2857: 2854: 2832: 2828: 2822: 2818: 2812: 2809: 2787: 2782: 2779: 2759: 2755: 2749: 2745: 2741: 2738: 2735: 2732: 2712: 2711: 2695: 2691: 2665: 2664: 2663: 2662: 2661: 2660: 2659: 2658: 2657: 2656: 2628: 2627: 2626: 2625: 2624: 2623: 2622: 2621: 2546: 2545: 2518: 2517: 2516: 2515: 2500: 2497: 2490: 2489: 2453: 2450: 2449: 2448: 2447: 2446: 2445: 2444: 2434:SteveMcCluskey 2416: 2415: 2414: 2413: 2386: 2385: 2370: 2369: 2338: 2335: 2334: 2333: 2273: 2272: 2206: 2203: 2202: 2201: 2149: 2148: 2109: 2108: 2107: 2106: 2105: 2104: 2068: 2067: 2066: 2065: 2064: 2063: 2060:sea level rise 2043: 2042: 2041: 2040: 2039: 2038: 2030: 2029: 2028: 2027: 2026: 2025: 2012: 2011: 2010: 2009: 1996: 1995: 1922: 1919: 1897: 1896: 1869: 1856: 1855: 1852: 1775: 1772: 1771: 1770: 1751: 1750: 1749: 1748: 1731: 1730: 1678: 1677: 1589: 1588: 1587: 1586: 1572: 1571: 1570: 1564: 1563: 1562: 1544: 1543: 1524: 1523: 1518: 1517: 1459: 1458: 1398: 1397: 1390: 1382: 1379: 1378: 1377: 1331: 1328: 1308: 1305: 1288: 1285: 1284: 1283: 1240: 1237: 1236: 1235: 1234: 1233: 1211: 1210: 1176: 1173: 1172: 1171: 1156: 1155: 1139: 1138: 1107: 1104: 1103: 1102: 1062: 1059: 1030: 1029: 1028: 1027: 1026: 1025: 929: 923: 922: 921: 920: 919: 872: 871: 864: 861: 860: 859: 820: 817: 816: 815: 814: 813: 812: 811: 810: 809: 808: 807: 784: 783: 782: 781: 780: 779: 778: 777: 761: 760: 759: 758: 740: 739: 738: 737: 736: 735: 721: 720: 719: 718: 695: 694: 664: 661: 652: 651: 648: 623: 622: 573: 570: 569: 568: 552: 551: 506: 503: 486: 485: 472: 469: 468: 467: 437: 436: 435: 434: 433: 432: 414: 413: 412: 411: 410: 409: 408: 407: 400: 393: 366: 365: 364: 363: 362: 361: 360: 359: 352: 345: 326: 325: 324: 323: 322: 321: 300: 299: 298: 297: 289: 272: 271: 262: 261: 260: 259: 258: 257: 234: 233: 232: 231: 230: 229: 221: 220: 219: 218: 217: 216: 207: 206: 205: 204: 203: 202: 182: 179: 173: 170: 169: 168: 167: 166: 136: 133: 121:75.157.213.174 109: 106: 71: 68: 65: 64: 52: 51: 34: 23: 15: 14: 13: 10: 9: 6: 4: 3: 2: 6615: 6606: 6605: 6601: 6597: 6588: 6584: 6580: 6576: 6572: 6568: 6564: 6560: 6556: 6555: 6554: 6550: 6546: 6542: 6539: 6535: 6531: 6527: 6523: 6521: 6517: 6513: 6508: 6504: 6502: 6498: 6494: 6490: 6489: 6488: 6487: 6483: 6479: 6476: 6468: 6464: 6460: 6456: 6451: 6450: 6449: 6448: 6444: 6440: 6431: 6427: 6423: 6419: 6416: 6408: 6404: 6400: 6396: 6392: 6387: 6378: 6377: 6376: 6372: 6368: 6364: 6360: 6357: 6356: 6355: 6354: 6350: 6346: 6336: 6333:parameter to 6324: 6320: 6316: 6309: 6308: 6302: 6300: 6299: 6295: 6291: 6283: 6281: 6280: 6276: 6272: 6264: 6262: 6261: 6257: 6253: 6249: 6242: 6238: 6237: 6236: 6234: 6230: 6223: 6220: 6219: 6218: 6216: 6213:For example, 6208: 6207: 6206: 6200: 6197: 6196: 6195: 6193: 6185: 6183: 6182: 6179: 6176: 6169: 6166: 6160: 6157: 6155: 6152: 6149: 6146: 6143: 6140: 6134: 6130: 6126: 6122: 6118: 6114: 6110: 6106: 6102: 6098: 6097: 6096: 6092: 6088: 6084: 6080: 6076: 6072: 6071: 6070: 6069: 6066: 6064: 6061: 6058: 6055: 6052: 6049: 6038: 6036: 6035: 6030: 6025: 6024: 6013: 6009: 6006: 6002: 6001: 6000: 5993: 5987: 5983: 5979: 5975: 5969: 5964: 5959: 5955: 5951: 5949: 5945: 5941: 5940: 5939: 5937: 5933: 5929: 5924: 5918: 5916: 5915: 5910: 5905: 5904: 5893: 5889: 5886: 5882: 5881: 5880: 5873: 5867: 5863: 5859: 5855: 5849: 5844: 5839: 5835: 5831: 5830: 5829: 5827: 5823: 5819: 5814: 5808: 5806: 5805: 5801: 5797: 5789: 5775: 5770: 5767: 5763: 5755: 5752: 5751: 5726: 5725: 5724: 5723: 5719: 5715: 5709: 5693: 5692: 5691: 5690: 5689: 5688: 5687: 5686: 5685: 5684: 5683: 5682: 5671: 5668: 5667: 5643: 5642: 5641: 5640: 5639: 5638: 5637: 5636: 5635: 5634: 5633: 5631: 5627: 5623: 5619: 5602: 5601: 5600: 5599: 5598: 5597: 5596: 5595: 5588: 5584: 5580: 5576: 5575: 5574: 5573: 5572: 5571: 5564: 5561: 5560: 5536: 5535: 5534: 5530: 5526: 5521: 5518: 5517:banned editor 5514: 5510: 5509: 5508: 5507: 5502: 5498: 5494: 5489: 5488: 5487: 5486: 5482: 5477: 5472: 5467: 5466: 5465: 5464: 5463: 5459: 5455: 5451: 5447: 5437: 5433: 5432: 5426: 5422: 5421: 5420: 5419: 5413: 5412: 5411: 5410: 5406: 5402: 5398: 5397: 5396: 5395: 5392: 5391: 5365: 5364: 5358: 5357: 5350: 5342: 5338: 5332: 5329: 5321: 5317: 5313: 5309: 5308: 5307: 5306: 5303: 5299: 5295: 5291: 5290: 5289: 5288: 5284: 5280: 5258: 5254: 5250: 5249: 5248: 5240: 5236: 5232: 5227: 5226: 5225: 5224: 5221: 5217: 5213: 5209: 5208: 5204: 5199: 5198: 5197: 5196: 5192: 5188: 5182: 5179: 5175: 5173: 5166: 5164: 5149: 5145: 5144: 5143: 5130: 5126: 5125: 5124: 5118: 5114: 5110: 5106: 5102: 5101: 5100: 5099: 5095: 5091: 5083: 5081: 5080: 5076: 5072: 5071:75.189.202.77 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2955: 2951: 2947: 2943: 2940: 2939: 2936: 2932: 2928: 2924: 2921: 2920: 2915: 2914: 2913: 2909: 2905: 2901: 2897: 2871: 2867: 2862: 2858: 2855: 2852: 2830: 2826: 2820: 2816: 2810: 2807: 2785: 2780: 2777: 2757: 2753: 2747: 2743: 2739: 2736: 2733: 2730: 2721: 2717: 2716: 2715: 2693: 2689: 2678: 2674: 2673: 2672: 2670: 2655: 2651: 2647: 2643: 2638: 2637: 2636: 2635: 2634: 2633: 2632: 2631: 2630: 2629: 2620: 2616: 2610: 2606: 2602: 2598: 2597: 2596: 2592: 2588: 2583: 2582: 2581: 2577: 2571: 2567: 2563: 2562: 2561: 2557: 2553: 2548: 2547: 2544: 2540: 2536: 2532: 2531:Sidereal year 2528: 2527:Sidereal year 2524: 2521:The section " 2520: 2519: 2514: 2510: 2506: 2501: 2498: 2495: 2494: 2492: 2491: 2486: 2485: 2484: 2480: 2476: 2472: 2468: 2460: 2451: 2443: 2439: 2435: 2431: 2427: 2422: 2421: 2420: 2419: 2418: 2417: 2412: 2408: 2404: 2399: 2395: 2390: 2389: 2388: 2387: 2384: 2380: 2376: 2372: 2371: 2368: 2364: 2360: 2356: 2355: 2354: 2353: 2349: 2345: 2332: 2328: 2324: 2319: 2318: 2317: 2316: 2312: 2308: 2304: 2302: 2298: 2293: 2290: 2286: 2283: 2282:I says that: 2280: 2278: 2270: 2266: 2262: 2258: 2254: 2250: 2249: 2248: 2247: 2243: 2239: 2235: 2233: 2227: 2223: 2220: 2217: 2213: 2210: 2204: 2200: 2196: 2192: 2188: 2184: 2180: 2175: 2174: 2173: 2172: 2168: 2164: 2160: 2158: 2154: 2147: 2143: 2139: 2135: 2131: 2128:According to 2127: 2126: 2125: 2124: 2120: 2116: 2112: 2099: 2094:</ref: --> 2082: 2078: 2074: 2073: 2072: 2071: 2070: 2069: 2061: 2057: 2052: 2049: 2048: 2047: 2046: 2045: 2044: 2036: 2035: 2034: 2033: 2032: 2031: 2022: 2018: 2017: 2016: 2015: 2014: 2013: 2007: 2006: 2005: 2004: 2003: 2001: 1994: 1990: 1986: 1982: 1981: 1980: 1979: 1975: 1971: 1967: 1964: 1961: 1958: 1957: 1953: 1948: 1943: 1940: 1939: 1935: 1932: 1931: 1926: 1920: 1918: 1917: 1913: 1909: 1905: 1903: 1902:Tropical year 1895: 1891: 1887: 1883: 1882: 1881: 1880: 1876: 1872: 1867: 1865: 1860: 1853: 1850: 1849: 1848: 1845: 1840: 1838: 1834: 1830: 1826: 1821: 1819: 1814: 1810: 1809: 1808:tropical year 1803: 1801: 1797: 1793: 1792: 1791:sidereal year 1786: 1783: 1780: 1773: 1769: 1765: 1761: 1756: 1753: 1752: 1747: 1743: 1739: 1735: 1734: 1733: 1732: 1729: 1725: 1721: 1717: 1712: 1708: 1703: 1702: 1701: 1700: 1696: 1692: 1688: 1684: 1681: 1676: 1672: 1668: 1663: 1657: 1652: 1648: 1644: 1640: 1635: 1634: 1633: 1632: 1628: 1624: 1620: 1618: 1614: 1610: 1605: 1602: 1597: 1592: 1585: 1581: 1577: 1573: 1568: 1567: 1565: 1560: 1559: 1557: 1553: 1548: 1547: 1546: 1545: 1542: 1538: 1534: 1530: 1526: 1525: 1520: 1519: 1515: 1514: 1513: 1512: 1508: 1504: 1500: 1497: 1494: 1493: 1489: 1486: 1485: 1481: 1477: 1473: 1470: 1466: 1462: 1457: 1453: 1449: 1445: 1444:Sidereal year 1441: 1440: 1439: 1438: 1434: 1430: 1426: 1423: 1420: 1419: 1415: 1411: 1407: 1404: 1401: 1395: 1391: 1388: 1387: 1386: 1380: 1376: 1372: 1368: 1356: 1352: 1348: 1347: 1346: 1345: 1341: 1337: 1330:Start of year 1329: 1327: 1326: 1322: 1318: 1314: 1307:Platonic year 1306: 1304: 1303: 1299: 1295: 1286: 1281: 1277: 1273: 1272:90.185.74.159 1269: 1262: 1261: 1260: 1259: 1255: 1251: 1246: 1238: 1232: 1228: 1224: 1219: 1218:Simon Newcomb 1215: 1214: 1213: 1212: 1209: 1205: 1201: 1197: 1193: 1192: 1191: 1190: 1186: 1182: 1174: 1170: 1166: 1162: 1158: 1157: 1154: 1150: 1146: 1141: 1140: 1137: 1133: 1129: 1125: 1124: 1123: 1122: 1118: 1114: 1105: 1101: 1097: 1093: 1089: 1088: 1087: 1086: 1082: 1078: 1074: 1071: 1067: 1060: 1058: 1057: 1053: 1049: 1044: 1043: 1039: 1035: 1024: 1020: 1016: 1011: 1007: 1004:The existing 1003: 1002: 1001: 998: 997: 996: 995:the Orphanage 991: 988: 985: 981: 977: 976: 975: 971: 967: 962: 961: 960: 959: 956: 955: 954: 953:the Orphanage 949: 946: 943: 939: 935: 928: 924: 918: 914: 910: 906: 902: 901: 900: 896: 892: 888: 887: 886: 885: 881: 877: 870: 867: 866: 863:orbital chaos 862: 858: 854: 850: 845: 844: 843: 841: 837: 833: 832:70.17.198.177 829: 818: 806: 802: 798: 794: 793: 792: 791: 790: 789: 788: 787: 786: 785: 776: 773: 769: 768: 767: 766: 765: 764: 763: 762: 757: 753: 749: 744: 743: 742: 741: 734: 731: 727: 726: 725: 724: 723: 722: 717: 714: 710: 707: 702: 699: 698: 697: 696: 693: 690: 686: 681: 680: 679: 678: 675: 672:measurements. 670: 662: 660: 659: 656: 655:82.163.24.100 649: 646: 645: 644: 641: 637: 633: 630: 627: 619: 615: 611: 607: 603: 597: 596: 595: 594: 591: 590:82.163.24.100 587: 585: 580: 577: 571: 567: 563: 559: 554: 553: 549: 545: 541: 540:90.185.74.159 537: 531: 530: 529: 526: 522: 518: 514: 504: 502: 501: 498: 493: 491: 482: 481: 480: 478: 470: 466: 462: 458: 454: 453: 452: 451: 447: 443: 431: 427: 423: 420: 419: 418: 417: 416: 415: 405: 401: 398: 394: 391: 387: 383: 382: 380: 376: 372: 371: 370: 369: 368: 367: 357: 353: 350: 346: 343: 339: 338: 336: 332: 331: 330: 329: 328: 327: 319: 315: 311: 306: 305: 304: 303: 302: 301: 296: 293: 288: 284: 280: 276: 275: 274: 273: 269: 264: 263: 256: 252: 248: 244: 240: 239: 238: 237: 236: 235: 227: 226: 225: 224: 223: 222: 213: 212: 211: 210: 209: 208: 199: 198: 197: 196: 195: 194: 193: 190: 188: 180: 178: 171: 164: 160: 156: 152: 145: 144: 143: 142: 141: 134: 132: 130: 126: 122: 118: 107: 105: 102: 98: 96: 91: 90: 87: 83: 78: 77: 69: 62: 58: 57: 49: 45: 41: 40: 35: 28: 27: 19: 6592: 6538:Year#Summary 6472: 6437:"features"? 6435: 6415:Already done 6414: 6385: 6358: 6342: 6334: 6319:edit request 6287: 6268: 6248:Year#Symbols 6245: 6239: 6229:MOS:EMPHASIS 6226: 6221: 6212: 6204: 6198: 6192:Year#Symbols 6189: 6175:Arthur Rubin 6172: 6153: 6150: 6147: 6144: 6141: 6138: 6132: 6128: 6124: 6120: 6116: 6112: 6108: 6104: 6101:The Guardian 6100: 6079:The Guardian 6078: 6062: 6059: 6056: 6053: 6050: 6047: 6042: 6020: 6017: 5992:source check 5971: 5965: 5962: 5925: 5922: 5900: 5897: 5872:source check 5851: 5845: 5842: 5815: 5812: 5793: 5773: 5769: 5761: 5730: 5710: 5707: 5646: 5616:— Preceding 5613: 5539: 5479: 5444:— Preceding 5441: 5435: 5425:astronomical 5424: 5405:astronomical 5404: 5400: 5370: 5366: 5340: 5331: 5276: 5245: 5183: 5177: 5171: 5169: 5167: 5160: 5141: 5122: 5087: 5067: 5034: 5026: 4986:— Preceding 4980: 4976: 4972: 4970: 4921: 4778: 4733: 4688: 4683: 4652: 4649:Duncan Steel 4586: 4541: 4537: 4534: 4529: 4525: 4523: 4519: 4515: 4465: 4335: 4209: 4112: 4030: 3958: 3920: 3888:ground state 3840: 3837:Blurish lead 3807: 3776:— Preceding 3772: 3753: 3735:— Preceding 3732: 3720: 3711: 3702: 3698: 3665: 3647: 3540:year (AD/BC) 3537:Type of year 3474:Type of year 3463: 3457: 3455: 3433: 3427: 3390: 3368:In summary: 3367: 3360: 3353: 3342: 3306:— Preceding 3182:— Preceding 3090: 3069: 3015: 2982:— Preceding 2894:— Preceding 2889: 2713: 2666: 2641: 2465:— Preceding 2455: 2424:the sign of 2340: 2305: 2301:leap seconds 2294: 2292:Conclusion: 2291: 2287: 2284: 2281: 2274: 2256: 2236: 2228: 2224: 2221: 2218: 2214: 2211: 2208: 2182: 2178: 2161: 2156: 2150: 2133: 2113: 2110: 2090:<ref: --> 2086:Cite error: 1999: 1997: 1968: 1965: 1963:Conclusion: 1962: 1959: 1947:apsidal line 1944: 1941: 1937: 1936: 1933: 1928: 1927: 1924: 1906: 1898: 1868: 1861: 1857: 1844:Kepler orbit 1841: 1824: 1822: 1806: 1804: 1799: 1795: 1789: 1787: 1784: 1781: 1777: 1706: 1689: 1685: 1682: 1679: 1642: 1638: 1621: 1616: 1612: 1608: 1606: 1603: 1598: 1593: 1590: 1501: 1498: 1495: 1490: 1487: 1474: 1471: 1467: 1463: 1460: 1427: 1424: 1421: 1408: 1405: 1402: 1399: 1384: 1333: 1310: 1290: 1242: 1178: 1109: 1075: 1072: 1068: 1064: 1045: 1031: 994: 992: 952: 950: 931: 873: 868: 822: 772:83.19.52.107 713:83.19.52.107 684: 674:83.19.52.107 666: 653: 642: 638: 634: 631: 628: 624: 588: 581: 578: 575: 508: 494: 490:weasal words 487: 474: 442:Gerry Ashton 438: 403: 396: 389: 385: 378: 374: 355: 348: 341: 334: 317: 313: 309: 286: 279:in principle 278: 191: 184: 175: 138: 111: 103: 99: 92: 79: 73: 60: 43: 37: 6252:fgnievinski 5796:86.22.8.235 3895:judgement. 3892:caesium 133 3636:anomalistic 3625:anomalistic 3614:anomalistic 3516:anomalistic 3408:LeadSongDog 3363:established 3356:established 2720:microsecond 2677:microsecond 2609:LeadSongDog 2570:LeadSongDog 2081:microsecond 1798:, singular 1336:94.30.84.71 1266:—Preceding 1239:365.44 days 1048:Williamborg 1015:LeadSongDog 966:LeadSongDog 925:Merge from 826:—Preceding 534:—Preceding 477:71.36.34.14 283:solar cycle 247:94.30.84.71 149:—Preceding 115:—Preceding 36:This is an 6327:|answered= 6029:Report bug 5909:Report bug 5762:References 4331:this paper 3847:Ale stenar 3843:Stonehenge 3413:come howl! 2614:come howl! 2575:come howl! 2428:) and its 2077:solar wind 2051:Tidal drag 2021:perihelion 1833:perihelion 1818:precession 1617:individual 1181:Thelazyleo 1077:Ben Arnold 797:82.27.9.75 606:Tom Peters 457:Rwflammang 422:Rwflammang 292:Peter 2005 6121:billioner 6083:(example) 6012:this tool 6005:this tool 5892:this tool 5885:this tool 5513:this edit 4875:AstroLynx 3852:Boeing720 3345:this edit 2886:. :ENDREF 2403:Joe Kress 2191:Joe Kress 2098:help page 2096:(see the 2083:per year. 1864:leap days 1760:Joe Kress 1720:Joe Kress 1667:Joe Kress 1576:Joe Kress 1367:Joe Kress 1359:1 January 1223:Joe Kress 984:Aervanath 942:Aervanath 938:synthesis 849:Joe Kress 497:Joe Kress 268:Joe Kress 61:Archive 1 18:Talk:Year 6478:Zectbumo 6190:Section 6117:biljoona 6018:Cheers.— 5898:Cheers.— 5618:unsigned 5458:contribs 5446:unsigned 5436:not made 5000:contribs 4988:unsigned 4975:, where 3778:unsigned 3737:unsigned 3603:sidereal 3592:sidereal 3581:sidereal 3570:tropical 3559:tropical 3548:tropical 3543:seconds 3502:sidereal 3488:tropical 3483:minutes 3320:contribs 3308:unsigned 3196:contribs 3184:unsigned 2996:contribs 2984:unsigned 2908:contribs 2896:unsigned 2479:contribs 2467:unsigned 2307:Stamcose 2238:Stamcose 2183:periodic 2163:Stamcose 2153:Nutation 2115:Stamcose 1970:Stamcose 1908:Stamcose 1871:Stamcose 1837:aphelion 1691:Stamcose 1623:Stamcose 1503:Stamcose 1476:Stamcose 1429:Stamcose 1410:Stamcose 1363:25 March 1268:unsigned 828:unsigned 614:contribs 602:unsigned 536:unsigned 513:unsigned 505:gigayear 151:unsigned 117:unsigned 6418:Baggaet 6359:Comment 6284:Perfect 6194:gives: 6133:billion 6113:Billion 6105:biljoen 5932:my edit 5822:my edit 5515:by the 5268:365.242 5261:365.242 5203:Delta T 5178:between 5152:365.242 5133:365.242 3890:of the 3886:of the 3729:Opening 3639:AD 2000 3628:AD 1900 3606:AD 2000 3595:AD 1900 3573:AD 2000 3562:AD 1900 2962:Thanks 2667:Thanks 2529:" and " 2375:Tamfang 2277:Delta T 2253:Delta T 2179:secular 2138:Tamfang 1985:Tamfang 1886:Tamfang 1829:apsides 1738:Tamfang 1609:at most 1145:Tamfang 1092:Tamfang 1034:SAE1962 909:Tamfang 876:Tamfang 730:Tamfang 689:Tamfang 39:archive 6559:Jc3s5h 6512:Jc3s5h 6493:𝕁𝕄𝔽 6455:𝕁𝕄𝔽 6363:Hijrah 6241:words. 6217:says: 6178:(talk) 6129:bilión 6125:biljon 6109:bilion 6087:Jc3s5h 5579:Jbeans 5525:Jc3s5h 5493:Jc3s5h 5450:Jbeans 5312:Jbeans 5294:Jc3s5h 5279:Jbeans 5231:Jbeans 5212:Jc3s5h 5187:Jbeans 5157:days). 5138:days). 5013:Jc3s5h 4771:25,771 4657:Jc3s5h 4551:Jc3s5h 4003:Jc3s5h 3897:Jc3s5h 3867:second 3756:Jc3s5h 3670:Jc3s5h 3650:Jc3s5h 3642:52.54 3631:52.27 3620:47.17 3576:45.25 3565:45.78 3554:55.96 3439:Jc3s5h 3392:Jc3s5h 3312:FrankH 3244:Jc3s5h 3188:FrankH 3074:Jc3s5h 3041:Jc3s5h 2988:FrankH 2927:Jc3s5h 2900:FrankH 2669:Jc3s5h 2646:Jc3s5h 2605:wp:NOR 2587:Jc3s5h 2552:Jc3s5h 2535:Jc3s5h 2505:Jc3s5h 2471:FrankH 2359:Jc3s5h 2323:Jc3s5h 2261:Jc3s5h 2257:86,000 2024:year). 1796:sidera 1680:VSOP: 1651:VSOP87 1647:VSOP82 1533:Jc3s5h 1529:WP:NOR 1448:Jc3s5h 1317:Jc3s5h 1294:Jc3s5h 1243:I was 1200:Jc3s5h 1161:Julzes 1128:Ilkali 1113:Julzes 748:Julzes 201:ahead. 82:(talk) 6345:اخسجہ 6331:|ans= 6317:This 6227:Here 5172:imply 3999:above 3695:(PDF) 3609:9.76 3598:9.75 3587:9.57 3480:hours 2941:This 2426:Aries 2219:But: 2212:Why? 1800:sidus 1013:most. 1010:Annum 987:lives 945:lives 927:Annum 819:Weeks 86:BozMo 16:< 6600:talk 6579:talk 6563:talk 6549:talk 6545:NebY 6532:and 6516:talk 6505:The 6497:talk 6482:talk 6459:talk 6443:talk 6422:talk 6399:talk 6395:NebY 6386:Done 6371:talk 6349:talk 6323:Year 6294:talk 6275:talk 6256:talk 6091:talk 5928:Year 5818:Year 5800:talk 5718:talk 5626:talk 5583:talk 5529:talk 5497:talk 5454:talk 5316:talk 5298:talk 5283:talk 5263:2222 5251:The 5235:talk 5216:talk 5191:talk 5109:talk 5105:Karl 5094:talk 5090:Karl 5075:talk 5017:talk 4996:talk 4967:ppm? 4879:talk 4837:talk 4742:talk 4734:mean 4661:talk 4628:talk 4571:talk 4555:talk 4410:talk 4324:and 4276:talk 4170:talk 4081:talk 4007:talk 3901:talk 3856:talk 3845:and 3801:and 3786:talk 3760:talk 3745:talk 3674:talk 3654:talk 3617:0 BC 3584:1 BC 3551:1 BC 3477:days 3456:The 3443:talk 3396:talk 3316:talk 3248:talk 3192:talk 3078:talk 3045:talk 2992:talk 2950:talk 2931:talk 2904:talk 2650:talk 2601:here 2591:talk 2556:talk 2539:talk 2509:talk 2475:talk 2438:talk 2407:talk 2379:talk 2363:talk 2348:talk 2344:Ds13 2327:talk 2311:talk 2265:talk 2242:talk 2195:talk 2189:. — 2167:talk 2142:talk 2119:talk 2058:and 2000:list 1989:talk 1974:talk 1954:and 1934:and 1912:talk 1890:talk 1875:talk 1823:The 1805:The 1788:The 1764:talk 1742:talk 1724:talk 1695:talk 1671:talk 1627:talk 1580:talk 1537:talk 1507:talk 1480:talk 1452:talk 1433:talk 1414:talk 1394:ICRS 1371:talk 1361:and 1353:and 1340:talk 1321:talk 1298:talk 1276:talk 1254:talk 1250:meco 1227:talk 1204:talk 1185:talk 1165:talk 1149:talk 1132:talk 1117:talk 1096:talk 1081:talk 1052:Bill 1038:talk 1019:talk 1006:Year 970:talk 913:talk 907:. — 895:talk 891:Karl 880:talk 853:talk 836:talk 801:talk 752:talk 610:talk 562:talk 558:WFPM 556:bad. 544:talk 521:talk 461:talk 446:talk 426:talk 379:most 251:talk 159:talk 125:talk 6329:or 6321:to 6135:. 5986:RfC 5956:to 5946:to 5866:RfC 5836:to 5148:ppm 5129:ppm 4981:ppm 4977:ppm 3879:770 3876:631 3873:192 3805:. 3703:282 3525:13 3519:365 3505:365 3497:48 3491:365 2279:. 2157:not 1802:). 1600:--> 1595:--> 685:and 402:If 395:If 384:If 354:If 347:If 340:If 97::P 6602:) 6581:) 6565:) 6551:) 6528:, 6518:) 6499:) 6484:) 6461:) 6453:-- 6445:) 6424:) 6401:) 6373:) 6351:) 6335:no 6296:) 6277:) 6258:) 6127:, 6123:, 6119:, 6115:, 6111:, 6107:, 6093:) 5999:. 5994:}} 5990:{{ 5879:. 5874:}} 5870:{{ 5802:) 5720:) 5628:) 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