2683:
507:
22:
375:
694:
2677:
343:
2458:
606:
2468:
624:
725:, the British Royal Navy adopted the 24-hour clock in 1915, and the Allied armed forces followed soon after, with the British Army switching officially in 1918. The Canadian armed forces first started to use the 24-hour clock in late 1917. In 1920, the United States Navy was the first United States organisation to adopt the system; the
446:
and military communication regulations in some
English-speaking countries discourage the use of 24:00 even in the 24-hour notation, and recommend reporting times near midnight as 23:59 or 00:01 instead. Sometimes the use of 00:00 is also avoided. In variance with this, as of 2010, the correspondence
717:
1886. A report by a government committee in the United
Kingdom noted Italy as the first country among those mentioned to adopt 24-hour time nationally, in 1893. Other European countries followed: France adopted it in 1912 (the French army in 1909), followed by Denmark (1916), and Greece (1917). By
469:
Time-of-day notations beyond 24:00 (such as 24:01 or 25:00 instead of 00:01 or 01:00) are not commonly used and not covered by the relevant standards. However, they have been used occasionally in some special contexts in the United
Kingdom, France, Spain, Canada, Japan, South Korea, Hong Kong, and
433:
In the 24-hour time notation, the day begins at midnight, 00:00 or 0:00, and the last minute of the day begins at 23:59. Where convenient, the notation 24:00 may also be used to refer to midnight at the end of a given date â that is, 24:00 of one day is the same time as 00:00 of the following
1453:
The Army has a new time system â Greenwich Civil Time â to be used in radiograms, telegrams, and all official communications. Effective 10 p. m. Monday, the War
Department adopted the 24-hour system, which is used internationally with the Navy and the Armed forces of associated nations. the six
646:
Italian (Bohemian, Old-Bohemian) hours (full-dial): 24 hours system with the day starting after sunset; on the static dial, the 24th hour was on the right side. In Italy, it was prevalently modified to a 4Ă6 hours system, but some 24-hour dials lasted until the 19th century. The system has spread
437:
The notation 24:00 mainly serves to refer to the exact end of a day in a time interval. A typical usage is giving opening hours ending at midnight (e.g. "00:00â24:00", "07:00â24:00"). Similarly, some bus and train timetables show 00:00 as departure time and 24:00 as arrival time. Legal contracts
1424:
Effective July 1, the United States Army will adopt the 24-hour clock system for all messages, dispatches, orders and reports, the War
Department has announced. Under this new system time will be expressed in a group of four digits ranging from 0000 to 2400. Flying officers at
390:, mm (00 to 59) is the number of full minutes that have passed since the last full hour, and ss (00 to 59) is the number of seconds since the last full minute. To indicate the exact end of the day, hh may take the value 24, with mm and ss taking the value 00. In the case of a
718:
1920, Spain, Portugal, Belgium, and
Switzerland had switched, followed by Turkey (1925), and Germany (1927). By the early 1920s, many countries in Latin America had also adopted the 24-hour clock. Some of the railways in India had switched before the outbreak of the war.
413:
as a separator, but most national standards on time notation have since then been changed to the international standard colon. In some contexts (including some computer protocols and military time), no separator is used and times are written as, for example, "2359".
688:
That this universal day is to be a mean solar day; is to begin for all the world at the moment of midnight of the initial meridian coinciding with the beginning of the civil day and date of that meridian, and is to be counted from zero up to twenty-four hours.
72:
A number of countries, particularly
English speaking, use the 12-hour clock, or a mixture of the 24- and 12-hour time systems. In countries where the 12-hour clock is dominant, some professions prefer to use the 24-hour clock. For example, in the practice of
661:
Striking clocks had to produce 300 strokes each day, which required a lot of rope, and wore out the mechanism quickly, so some localities switched to ringing sequences of 1 to 12 twice (156 strokes), or even 1 to 6 repeated four times (84 strokes).
651:. The Prague Astronomical Clock struck according to the Old Bohemian Clock until its destruction in 1945. The variant with counting from dawn is also rarely documented and used, e.g. on a 16th-century cabinet clock in the Vienna Art-History Museum.
740:(BBC) switched to the 24-hour clock for broadcast announcements and programme listings. The experiment was halted after five months following a lack of enthusiasm from the public, and the BBC continued using the 12-hour clock. In the same year,
394:, the value of ss may extend to 60. A leading zero is added for numbers under 10, but it is optional for the hours. The leading zero is very commonly used in computer applications, and always used when a specification requires it (for example,
539:
repetitions of this sequence. The 24-hour clock is commonly used there only in some specialist areas (military, aviation, navigation, tourism, meteorology, astronomy, computing, logistics, emergency services, hospitals), where the
561:
are always written out and are required to be spoken, so 5:43 a.m. is spoken "zero five forty-three" (casually) or "zero five four three" (military radio), as opposed to "five forty-three" or "five four
441:
While the 24-hour notation unambiguously distinguishes between midnight at the start (00:00) and end (24:00) of any given date, there is no commonly accepted distinction among users of the 12-hour notation.
526:
is a synonym for the 24-hour clock. In the US, the time of day is customarily given almost exclusively using the 12-hour clock notation, which counts the hours of the day as 12, 1, ..., 11 with suffixes
593:(UTC) is designated time zone Z, and thus called "Zulu time". (When used as a modern time zone, in practice, GMT and UTC coincide. For other purposes there may be a difference of about a second.)
386:
A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since
2581:
2504:
658:
The modern 24-hour system is a late-19th century adaptation of the German midnight-starting system, and then prevailed in the world with the exception of some
Anglophone countries.
490:
activate the 12-hour notation by default only if a computer is in a handful of specific language and region settings. The 24-hour system is commonly used in text-based interfaces.
405:; that is, the fractional part follows a decimal dot or comma, as in 01:23:45.678. The most commonly used separator symbol between hours, minutes and seconds is the
547:
Military usage, as agreed between the United States and allied
English-speaking military forces, differs in some respects from other twenty-four-hour time systems:
2497:
733:
1454:
hours difference between
Mountain War Time and actual Greenwich time must be taken into account, so that 12 noon is expressed on communications as 1800.
1280:"International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day. October 1884. Protocols of the proceedings"
639:
which counted the 24 hours of the day from one-half hour after sunset to the evening of the following day. The 24th hour was the last hour of day time.
654:
German (Gallic) hours (half-dial): 2Ă12 hour system starting at midnight and restarted at noon. It is typical with the 12-hour dial with 12 at the top.
3035:
2490:
2067:
1903:
874:
801:
474:
public transport schedule listings file format has the concept of service days and expects times beyond 24:00 for trips that run after midnight.
1336:
736:
has grown steadily since the beginning of the 20th century, although attempts to make the system official failed more than once. In 1934, the
3266:
1532:
773:
3004:
1016:
993:
760:
switched to the 24-hour clock for timetables in 1964. A mixture of the 12- and 24-hour clocks similarly prevails in other English-speaking
3261:
769:
748:
in the United States both adopted the 24-hour clock. In modern times, the BBC uses a mixture of both the 12-hour and the 24-hour clock.
471:
984:
3271:
2755:
923:
681:
596:
Hours are always "hundred", never "thousand"; 1000 is "ten hundred" not "one thousand"; 2000 is "twenty hundred" not "two thousand".
672:, was an early proponent of using the 24-hour clock as part of a programme to reform timekeeping, which also included establishing
1077:
958:
765:
2017:
1672:
841:
464:
2828:
1896:
1156:
1048:
647:
especially to the Alpine countries, Czech countries and Poland. In Bohemia, this system was finally banned in 1621 after the
21:
3009:
1411:
862:
506:
1979:
1441:
1429:
have used the 24-hour clock system for some time. However, its use in official business messages will be an innovation.
2964:
2944:
2890:
2775:
2611:
2270:
821:
565:
2182:
2631:
2616:
2554:
2533:
1622:
1602:
941:
ISO 8601:2004 â Data elements and interchange formats â Information interchange â Representation of dates and times
900:
ISO 8601:2004 â Data elements and interchange formats â Information interchange â Representation of dates and times
866:
741:
590:
452:
49:
to midnight and is divided into 24 hours. This is indicated by the hours (and minutes) passed since midnight, from
2785:
2596:
2333:
2062:
1612:
1525:
576:(UTCâ5), which is designated time zone R, 2:00 a.m. is written "0200R" and spoken "zero two hundred Romeo".
2032:
753:
710:
648:
470:
China where business hours extend beyond midnight, such as broadcast television production and scheduling. The
3045:
2823:
2725:
2641:
2636:
2288:
1939:
1059:
761:
1642:
1333:"Memorandum CAB 24/110/21 (CP 1721), 'Report of the Committee upon the 24 hour method of expressing time'"
1007:
816:
580:
569:
374:
3198:
2103:
2048:
2002:
1987:
1632:
1214:
669:
636:
65:, is the most commonly used time notation in the world today, and is used by the international standard
966:. Combined Communications-Electronics Board. October 2010. p. 3-6. ACP 121(I). Archived from
3025:
2939:
2765:
2626:
2354:
2323:
1772:
1667:
1518:
1426:
1307:
1110:
3235:
3030:
2885:
2750:
2702:
2571:
2228:
1687:
1647:
831:
811:
791:
698:
586:
406:
3210:
2984:
2908:
2838:
2177:
2155:
2022:
1846:
1817:
1752:
1745:
1419:
1126:
865:
for detailed data about the preferred date and time notations used across the world, as well the
757:
726:
617:
511:
448:
379:
693:
3058:
2923:
2740:
2258:
2137:
2037:
1890:
1793:
1697:
1332:
1152:
919:
573:
483:
2471:
3203:
2949:
2928:
2880:
2843:
2656:
2376:
2364:
2192:
2160:
1992:
1861:
1777:
1767:
1682:
1256:
1230:
1118:
870:
745:
665:
519:
1279:
996:. March 2010. Chapter 2, Section 5 Paragraph 15. Expressing Military Time. SECNAV M-5216.5.
409:, which is also the symbol used in ISO 8601. In the past, some European countries used the
2934:
2913:
2745:
2717:
2438:
2303:
2280:
2248:
2200:
2187:
2150:
2132:
1762:
1757:
1019:. June 2015. Chapter 2, Section 5 Paragraph 15. Expressing Military Time. SECNAV M-5216.5.
455:
formerly specified 0001 to 2400. The manual was updated in June 2015 to use 0000 to 2359.
82:
1249:
Scientia Canadensis: Canadian Journal of the History of Science, Technology and Medicine
1114:
482:
In most countries, computers by default show the time in 24-hour notation. For example,
3230:
2989:
2979:
2918:
2875:
2707:
2697:
2666:
2566:
2538:
2381:
2371:
2170:
2042:
2012:
1997:
1782:
1740:
1735:
1607:
1358:
1344:
1030:
702:
677:
642:
From the 14th to the 17th century, two systems of time measurement competed in Europe:
1084:
967:
342:
3255:
3117:
3068:
3053:
2999:
2770:
2601:
2517:
2461:
2411:
2359:
2293:
2265:
2253:
2243:
2233:
2115:
1959:
1885:
1834:
1787:
1702:
1662:
1652:
1585:
1224:
1130:
1122:
786:
609:
552:
541:
329:
99:
62:
1185:
605:
3215:
3102:
3097:
3092:
3079:
2818:
2433:
2427:
2093:
2027:
1949:
1880:
1829:
1677:
1617:
806:
749:
558:
427:
77:, the 24-hour clock is generally used in documentation of care as it prevents any
2482:
1063:
3225:
3220:
2865:
2848:
2780:
2760:
2646:
2528:
2443:
2421:
2328:
2313:
2108:
2088:
2078:
2007:
1964:
1944:
1873:
1692:
1594:
1502:
1474:
826:
722:
443:
423:
391:
38:
3240:
3193:
3177:
3063:
2969:
2790:
2651:
2621:
2559:
2338:
2238:
2145:
2120:
1923:
1707:
1399:
Gallant Canadians: The Story of the 10th Canadian Infantry Battalion 1914â1919
29:, Brazil, with the hour hand on the outside and the minute hand on the inside.
3137:
2974:
2858:
2833:
2813:
2730:
2682:
2676:
2661:
2401:
2318:
1954:
1866:
1841:
1822:
1712:
1384:
1302:
714:
673:
410:
78:
61:
as an option to indicate the end of the day. This system, as opposed to the
939:
898:
3172:
3152:
2994:
2900:
2800:
2591:
2586:
1969:
1730:
1722:
1580:
1570:
729:, however, did not officially adopt the 24-hour clock until 1 July 1942.
395:
387:
346:
World map showing the usage of 12 or 24-hour clock in different countries
74:
66:
46:
26:
1197:
914:
Pickar, Gloria D.; Graham, Hope; Swart, Beth; Swedish, Margaret (2011).
3167:
3157:
3087:
2959:
2870:
2735:
2308:
2298:
2220:
2211:
2196:
2098:
2083:
1928:
1851:
1560:
1448:
623:
402:
1101:
Guinot, Bernard (August 2011). "Solar time, legal time, time in use".
3162:
3112:
3107:
2406:
1565:
1261:
1244:
1053:
628:
1219:
Annual Report of the Board of Regents of the Smithsonian Institution
1172:
438:
often run from the start date at 00:00 until the end date at 24:00.
3142:
2954:
2853:
2808:
2416:
2165:
1856:
1812:
1804:
796:
692:
622:
604:
505:
491:
487:
373:
341:
20:
713:
was among the first organisations to adopt the 24-hour clock, at
684:
in 1884, the following resolution was adopted by the conference:
3147:
3132:
3122:
2576:
2513:
1555:
1541:
918:(2nd Canadian ed.). Toronto: Nelson Education. p. 60.
836:
551:
No hours/minutes separator is used when writing the time, and a
2486:
1514:
3127:
1340:
1306:
reports on a timetable using the 24-hour clock on a trip from
737:
536:
42:
1316:. No. 31880. London. 2 October 1886. col 1â2, p. 8.
401:
Where subsecond resolution is required, the seconds can be a
635:
The first mechanical public clocks introduced in Italy were
495:
422:"23:59" redirects here. For the Christian metal album, see
2582:
International Earth Rotation and Reference Systems Service
1173:
Hodiny nÄmeckĂ© a ÄeskĂ© na pĆŻl orloje a podle celĂ©ho orloje
583:". "1200J" ("twelve hundred Juliett") is noon local time.
1510:
544:
are deemed too inconvenient, cumbersome, or dangerous.
1149:
History of the Hour. Clock and Modern Temporal Orders
498:
default to displaying timestamps in 24-hour format.
3186:
3077:
3044:
3018:
2899:
2799:
2716:
2690:
2547:
2394:
2347:
2279:
2219:
2209:
2131:
2058:
1978:
1919:
1803:
1721:
1631:
1593:
1579:
1548:
1504:
Counting Time: a brief history of the 24-hour clock
1476:
Counting Time: a brief history of the 24-hour clock
1359:"History of the 24-Hour Clock - 24 Hour Time Clock"
330:
12-hour clock § Confusion at noon and midnight
568:are lettered and given word designations from the
1442:"It Will Be 2100 O'Clock at Ft. Bliss At 3 p. m."
705:up to XXIII (23) and 0 for midnight, in Greenwich
1468:
1466:
1464:
1462:
1151:. The University of Chicago Press. p. 114.
1078:"Communication Instructions General ACP 121(I)"
686:
944:(3rd ed.). 2004. Clause 4.2.3 "Midnight".
324:
322:
320:
2498:
1526:
768:much more broadly than English speakers, and
8:
1009:Department of the Navy Correspondence Manual
986:Department of the Navy Correspondence Manual
764:countries: French speakers have adopted the
465:Date and time notation in Japan § Time
2505:
2491:
2483:
2216:
1590:
1533:
1519:
1511:
1215:"Time-reckoning for the twentieth century"
1208:
1206:
81:as to when events occurred in a patient's
1260:
1142:
1140:
3036:International Commission on Stratigraphy
1327:
1325:
1323:
1226:Time-reckoning for the twentieth century
953:
951:
668:, the engineer-in-chief of the Canadian
92:
890:
875:Date and time representation by country
854:
802:Date and time representation by country
579:Local time is designated as zone J or "
316:
1274:
1272:
742:Pan American World Airways Corporation
1245:"Sandford Fleming and Universal Time"
7:
2467:
1489:Sarasota Herald-Tribune 1943 May 14.
1017:United States Department of the Navy
994:United States Department of the Navy
960:Communication instructions â General
734:24-hour clock in the United Kingdom
614:Face with Four Prophets/Evangelists
542:ambiguities of the 12-hour notation
111:12:00 a.m. (start of the day)
1147:Dohrn-Van Rossum, Gerhard (1996).
555:is appended (for example "0340Z").
14:
2756:Discrete time and continuous time
1031:"Reference | Static Transit"
682:International Meridian Conference
2681:
2675:
2466:
2457:
2456:
1412:"Army Adopts 24-Hour Clock Plan"
1175:, Otta z Losu, last update 2021.
738:British Broadcasting Corporation
553:letter designating the time zone
842:Traditional Chinese timekeeping
2829:History of timekeeping devices
631:that lists hours 1 to 12 twice
424:Veni Domine § Discography
357: 24-hour (12-hour orally)
1:
1473:Boardman, Peter (July 2011).
863:Common Locale Data Repository
510:24-hour clock as seen on the
3267:Date and time representation
2776:Gravitational time dilation
2612:Barycentric Coordinate Time
2271:Geological history of Earth
1422:. 26 June 1942. p. 2.
869:settings of major computer
822:List of military time zones
627:The 24-hour tower clock in
3288:
3262:24-hour clocks and watches
2632:Geocentric Coordinate Time
2617:Barycentric Dynamical Time
2555:Coordinated Universal Time
1623:Orders of magnitude (time)
1451:. 3 July 1942. p. 3.
1388:: 1918 September 19, p. 3.
1213:Fleming, Sandford (1886).
1184:Stan. MaruĆĄĂĄk, Petr KrĂĄl:
1123:10.1088/0026-1394/48/4/S08
591:Coordinated Universal Time
462:
453:United States Marine Corps
421:
25:A public 24-hour clock in
2786:Time-translation symmetry
2673:
2597:International Atomic Time
2524:
2452:
2334:Time translation symmetry
1282:. Project Gutenberg. 1884
637:mechanical 24-hour clocks
378:24-hour digital clock in
313:
3272:Time measurement systems
711:Canadian Pacific Railway
649:defeat on White Mountain
574:US Eastern Standard Time
418:Midnight 00:00 and 24:00
363: Both in common use
3046:Astronomical chronology
3019:Archaeology and geology
2726:Absolute space and time
2642:IERS Reference Meridian
2637:International Date Line
2548:International standards
2289:Absolute space and time
1940:Astronomical chronology
1060:Oxford University Press
776:also use both systems.
766:24-hour clock in Canada
535:distinguishing the two
2339:Time reversal symmetry
1643:Italian six-hour clock
817:Italian six-hour clock
706:
691:
632:
620:
570:NATO phonetic alphabet
515:
383:
371:
30:
16:Timekeeping convention
3005:Weekday determination
2891:Sundial markup schema
2104:Time and fate deities
2049:The Unreality of Time
1988:A series and B series
1337:The National Archives
1243:Creet, Mario (1990).
1198:ÄeskĂœ Äas s otaznĂkem
1056:UK English Dictionary
903:(3rd ed.). 2004.
696:
670:Intercolonial Railway
626:
608:
509:
377:
345:
37:is the convention of
24:
3026:Chronological dating
2766:Theory of relativity
2627:Daylight saving time
2355:Chronological dating
2324:Theory of relativity
1668:Daylight saving time
1397:Dancocks, Daniel G.
1308:Port Arthur, Ontario
1066:on 12 November 2020.
426:. For the film, see
3236:Time value of money
3031:Geologic time scale
2886:History of sundials
2751:Cosmological decade
2703:Greenwich Mean Time
2534:Orders of magnitude
1648:Thai six-hour clock
1445:El Paso Herald-Post
1363:Military Time Chart
1312:"A Canadian Tour".
1223:Reprinted in 1889:
1115:2011Metro..48S.181G
916:Dosage calculations
832:Thai six-hour clock
812:Hindu units of time
792:24-hour analog dial
699:Shepherd Gate Clock
587:Greenwich Mean Time
566:Military time zones
109:12:00 midnight
3211:Mental chronometry
2839:Marine chronometer
2691:Obsolete standards
2178:Rosy retrospection
2156:Mental chronometry
1980:Philosophy of time
1420:Brownsville, Texas
1416:Brownsville Herald
1365:. 24 December 2016
873:, and the article
758:London Underground
727:United States Army
707:
633:
621:
618:Florence Cathedral
572:. For example, in
516:
449:United States Navy
384:
380:Miaoli HSR station
372:
31:
3249:
3248:
3059:Nuclear timescale
2741:Continuous signal
2480:
2479:
2390:
2389:
2365:Circadian rhythms
2183:Tenseâaspectâmood
2038:Temporal finitism
1915:
1914:
1891:Grandfather clock
1035:Google Developers
973:on 7 August 2011.
871:operating systems
494:programs such as
484:Microsoft Windows
459:Times after 24:00
340:
339:
309:(end of the day)
3279:
2950:Dominical letter
2881:Equation of time
2844:Marine sandglass
2685:
2679:
2657:Terrestrial Time
2514:Time measurement
2507:
2500:
2493:
2484:
2470:
2469:
2460:
2459:
2377:Glottochronology
2217:
2133:Human experience
1993:B-theory of time
1591:
1535:
1528:
1521:
1512:
1490:
1487:
1481:
1480:
1470:
1457:
1456:
1438:
1432:
1431:
1408:
1402:
1395:
1389:
1381:
1375:
1374:
1372:
1370:
1355:
1349:
1348:
1347:. 4 August 1920.
1329:
1318:
1317:
1298:
1292:
1291:
1289:
1287:
1276:
1267:
1266:
1264:
1262:10.7202/800302ar
1240:
1234:
1231:Internet Archive
1222:
1210:
1201:
1195:
1189:
1182:
1176:
1169:
1163:
1162:
1144:
1135:
1134:
1098:
1092:
1091:
1089:
1083:. Archived from
1082:
1074:
1068:
1067:
1062:. Archived from
1045:
1039:
1038:
1027:
1021:
1020:
1014:
1004:
998:
997:
991:
981:
975:
974:
972:
965:
955:
946:
945:
936:
930:
929:
911:
905:
904:
895:
878:
859:
754:London Transport
746:Western Airlines
666:Sandford Fleming
520:American English
478:Computer support
403:decimal fraction
368:
362:
356:
350:
332:
326:
297:11:00 p.m.
289:10:00 p.m.
209:12:00 p.m.
199:11:00 a.m.
191:10:00 a.m.
93:
60:
56:
52:
3287:
3286:
3282:
3281:
3280:
3278:
3277:
3276:
3252:
3251:
3250:
3245:
3182:
3073:
3040:
3014:
2895:
2795:
2746:Coordinate time
2718:Time in physics
2712:
2686:
2680:
2671:
2543:
2520:
2511:
2481:
2476:
2448:
2439:Time immemorial
2386:
2343:
2304:Coordinate time
2275:
2229:Geological time
2205:
2188:Time management
2151:Generation time
2135:
2127:
2072:
2054:
1974:
1933:
1911:
1799:
1717:
1634:
1627:
1583:
1575:
1544:
1539:
1499:
1494:
1493:
1488:
1484:
1472:
1471:
1460:
1440:
1439:
1435:
1410:
1409:
1405:
1396:
1392:
1382:
1378:
1368:
1366:
1357:
1356:
1352:
1331:
1330:
1321:
1311:
1299:
1295:
1285:
1283:
1278:
1277:
1270:
1242:
1241:
1237:
1212:
1211:
1204:
1196:
1192:
1186:ÄtyĆiadvacetnĂk
1183:
1179:
1171:TomĂĄĆĄ VoĆĂĆĄek:
1170:
1166:
1159:
1146:
1145:
1138:
1100:
1099:
1095:
1087:
1080:
1076:
1075:
1071:
1049:"military time"
1047:
1046:
1042:
1029:
1028:
1024:
1012:
1006:
1005:
1001:
989:
983:
982:
978:
970:
963:
957:
956:
949:
938:
937:
933:
926:
913:
912:
908:
897:
896:
892:
887:
882:
881:
860:
856:
851:
846:
782:
732:The use of the
676:and a standard
603:
504:
480:
467:
461:
447:manual for the
431:
420:
411:dot on the line
370:
366:
364:
360:
358:
354:
352:
348:
336:
335:
327:
318:
308:
303:
281:9:00 p.m.
273:8:00 p.m.
265:7:00 p.m.
257:6:00 p.m.
249:5:00 p.m.
241:4:00 p.m.
233:3:00 p.m.
225:2:00 p.m.
217:1:00 p.m.
208:
207:12:00 noon
183:9:00 a.m.
175:8:00 a.m.
167:7:00 a.m.
159:6:00 a.m.
151:5:00 a.m.
143:4:00 a.m.
135:3:00 a.m.
127:2:00 a.m.
119:1:00 a.m.
110:
91:
83:medical history
58:
54:
50:
17:
12:
11:
5:
3285:
3283:
3275:
3274:
3269:
3264:
3254:
3253:
3247:
3246:
3244:
3243:
3238:
3233:
3231:Time metrology
3228:
3223:
3218:
3213:
3208:
3207:
3206:
3196:
3190:
3188:
3187:Related topics
3184:
3183:
3181:
3180:
3175:
3170:
3165:
3160:
3155:
3150:
3145:
3140:
3135:
3130:
3125:
3120:
3115:
3110:
3105:
3100:
3095:
3090:
3084:
3082:
3075:
3074:
3072:
3071:
3066:
3061:
3056:
3050:
3048:
3042:
3041:
3039:
3038:
3033:
3028:
3022:
3020:
3016:
3015:
3013:
3012:
3007:
3002:
2997:
2992:
2987:
2982:
2977:
2972:
2967:
2962:
2957:
2952:
2947:
2942:
2937:
2932:
2926:
2921:
2916:
2911:
2905:
2903:
2897:
2896:
2894:
2893:
2888:
2883:
2878:
2876:Dialing scales
2873:
2868:
2863:
2862:
2861:
2851:
2846:
2841:
2836:
2831:
2826:
2821:
2816:
2811:
2805:
2803:
2797:
2796:
2794:
2793:
2788:
2783:
2778:
2773:
2768:
2763:
2758:
2753:
2748:
2743:
2738:
2733:
2728:
2722:
2720:
2714:
2713:
2711:
2710:
2708:Prime meridian
2705:
2700:
2698:Ephemeris time
2694:
2692:
2688:
2687:
2674:
2672:
2670:
2669:
2667:180th meridian
2664:
2659:
2654:
2649:
2644:
2639:
2634:
2629:
2624:
2619:
2614:
2609:
2604:
2599:
2594:
2589:
2584:
2579:
2574:
2569:
2564:
2563:
2562:
2551:
2549:
2545:
2544:
2542:
2541:
2536:
2531:
2525:
2522:
2521:
2512:
2510:
2509:
2502:
2495:
2487:
2478:
2477:
2475:
2474:
2464:
2453:
2450:
2449:
2447:
2446:
2441:
2436:
2431:
2424:
2419:
2414:
2409:
2404:
2398:
2396:
2392:
2391:
2388:
2387:
2385:
2384:
2382:Time geography
2379:
2374:
2372:Clock reaction
2369:
2368:
2367:
2357:
2351:
2349:
2345:
2344:
2342:
2341:
2336:
2331:
2326:
2321:
2316:
2311:
2306:
2301:
2296:
2291:
2285:
2283:
2277:
2276:
2274:
2273:
2268:
2263:
2262:
2261:
2256:
2251:
2246:
2241:
2236:
2225:
2223:
2214:
2207:
2206:
2204:
2203:
2190:
2185:
2180:
2175:
2174:
2173:
2171:time signature
2168:
2158:
2153:
2148:
2142:
2140:
2129:
2128:
2126:
2125:
2124:
2123:
2113:
2112:
2111:
2101:
2096:
2091:
2086:
2081:
2075:
2073:
2071:
2070:
2065:
2059:
2056:
2055:
2053:
2052:
2045:
2043:Temporal parts
2040:
2035:
2030:
2025:
2020:
2015:
2013:Eternal return
2010:
2005:
2000:
1998:Chronocentrism
1995:
1990:
1984:
1982:
1976:
1975:
1973:
1972:
1967:
1962:
1957:
1952:
1947:
1942:
1936:
1934:
1932:
1931:
1926:
1920:
1917:
1916:
1913:
1912:
1910:
1909:
1908:
1907:
1893:
1888:
1883:
1878:
1877:
1876:
1871:
1870:
1869:
1864:
1854:
1849:
1844:
1839:
1838:
1837:
1827:
1826:
1825:
1809:
1807:
1801:
1800:
1798:
1797:
1790:
1785:
1783:Hindu Panchang
1780:
1775:
1770:
1765:
1760:
1755:
1750:
1749:
1748:
1743:
1738:
1727:
1725:
1719:
1718:
1716:
1715:
1710:
1705:
1700:
1695:
1690:
1685:
1680:
1675:
1670:
1665:
1660:
1655:
1650:
1645:
1639:
1637:
1629:
1628:
1626:
1625:
1620:
1615:
1610:
1605:
1599:
1597:
1588:
1577:
1576:
1574:
1573:
1568:
1563:
1558:
1552:
1550:
1546:
1545:
1540:
1538:
1537:
1530:
1523:
1515:
1509:
1508:
1498:
1497:External links
1495:
1492:
1491:
1482:
1458:
1433:
1403:
1390:
1376:
1350:
1345:United Kingdom
1319:
1293:
1268:
1255:(1â2): 66â89.
1235:
1202:
1190:
1177:
1164:
1157:
1136:
1093:
1090:on 8 May 2016.
1069:
1040:
1022:
999:
976:
947:
931:
924:
906:
889:
888:
886:
883:
880:
879:
853:
852:
850:
847:
845:
844:
839:
834:
829:
824:
819:
814:
809:
804:
799:
794:
789:
783:
781:
778:
703:Roman numerals
678:prime meridian
656:
655:
652:
602:
599:
598:
597:
594:
584:
577:
563:
556:
503:
500:
479:
476:
460:
457:
419:
416:
365:
359:
353:
347:
338:
337:
334:
333:
315:
314:
311:
310:
307:12:00 midnight
305:
304:00:00 next day
299:
298:
295:
291:
290:
287:
283:
282:
279:
275:
274:
271:
267:
266:
263:
259:
258:
255:
251:
250:
247:
243:
242:
239:
235:
234:
231:
227:
226:
223:
219:
218:
215:
211:
210:
205:
201:
200:
197:
193:
192:
189:
185:
184:
181:
177:
176:
173:
169:
168:
165:
161:
160:
157:
153:
152:
149:
145:
144:
141:
137:
136:
133:
129:
128:
125:
121:
120:
117:
113:
112:
107:
103:
102:
97:
90:
87:
15:
13:
10:
9:
6:
4:
3:
2:
3284:
3273:
3270:
3268:
3265:
3263:
3260:
3259:
3257:
3242:
3239:
3237:
3234:
3232:
3229:
3227:
3224:
3222:
3219:
3217:
3214:
3212:
3209:
3205:
3202:
3201:
3200:
3197:
3195:
3192:
3191:
3189:
3185:
3179:
3176:
3174:
3171:
3169:
3166:
3164:
3161:
3159:
3156:
3154:
3151:
3149:
3146:
3144:
3141:
3139:
3136:
3134:
3131:
3129:
3126:
3124:
3121:
3119:
3116:
3114:
3111:
3109:
3106:
3104:
3101:
3099:
3096:
3094:
3091:
3089:
3086:
3085:
3083:
3081:
3080:units of time
3076:
3070:
3069:Sidereal time
3067:
3065:
3062:
3060:
3057:
3055:
3054:Galactic year
3052:
3051:
3049:
3047:
3043:
3037:
3034:
3032:
3029:
3027:
3024:
3023:
3021:
3017:
3011:
3010:Weekday names
3008:
3006:
3003:
3001:
3000:Tropical year
2998:
2996:
2993:
2991:
2988:
2986:
2983:
2981:
2978:
2976:
2973:
2971:
2968:
2966:
2965:Intercalation
2963:
2961:
2958:
2956:
2953:
2951:
2948:
2946:
2943:
2941:
2938:
2936:
2933:
2931:(lunar Hijri)
2930:
2927:
2925:
2922:
2920:
2917:
2915:
2912:
2910:
2907:
2906:
2904:
2902:
2898:
2892:
2889:
2887:
2884:
2882:
2879:
2877:
2874:
2872:
2869:
2867:
2864:
2860:
2857:
2856:
2855:
2852:
2850:
2847:
2845:
2842:
2840:
2837:
2835:
2832:
2830:
2827:
2825:
2822:
2820:
2817:
2815:
2812:
2810:
2807:
2806:
2804:
2802:
2798:
2792:
2789:
2787:
2784:
2782:
2779:
2777:
2774:
2772:
2771:Time dilation
2769:
2767:
2764:
2762:
2759:
2757:
2754:
2752:
2749:
2747:
2744:
2742:
2739:
2737:
2734:
2732:
2729:
2727:
2724:
2723:
2721:
2719:
2715:
2709:
2706:
2704:
2701:
2699:
2696:
2695:
2693:
2689:
2684:
2678:
2668:
2665:
2663:
2660:
2658:
2655:
2653:
2650:
2648:
2645:
2643:
2640:
2638:
2635:
2633:
2630:
2628:
2625:
2623:
2620:
2618:
2615:
2613:
2610:
2608:
2607:24-hour clock
2605:
2603:
2602:12-hour clock
2600:
2598:
2595:
2593:
2590:
2588:
2585:
2583:
2580:
2578:
2575:
2573:
2570:
2568:
2565:
2561:
2558:
2557:
2556:
2553:
2552:
2550:
2546:
2540:
2537:
2535:
2532:
2530:
2527:
2526:
2523:
2519:
2515:
2508:
2503:
2501:
2496:
2494:
2489:
2488:
2485:
2473:
2465:
2463:
2455:
2454:
2451:
2445:
2442:
2440:
2437:
2435:
2432:
2430:
2429:
2425:
2423:
2420:
2418:
2415:
2413:
2410:
2408:
2405:
2403:
2400:
2399:
2397:
2393:
2383:
2380:
2378:
2375:
2373:
2370:
2366:
2363:
2362:
2361:
2360:Chronobiology
2358:
2356:
2353:
2352:
2350:
2346:
2340:
2337:
2335:
2332:
2330:
2327:
2325:
2322:
2320:
2317:
2315:
2312:
2310:
2307:
2305:
2302:
2300:
2297:
2295:
2294:Arrow of time
2292:
2290:
2287:
2286:
2284:
2282:
2278:
2272:
2269:
2267:
2266:Geochronology
2264:
2260:
2257:
2255:
2252:
2250:
2247:
2245:
2242:
2240:
2237:
2235:
2232:
2231:
2230:
2227:
2226:
2224:
2222:
2218:
2215:
2213:
2208:
2202:
2198:
2194:
2191:
2189:
2186:
2184:
2181:
2179:
2176:
2172:
2169:
2167:
2164:
2163:
2162:
2159:
2157:
2154:
2152:
2149:
2147:
2144:
2143:
2141:
2139:
2134:
2130:
2122:
2119:
2118:
2117:
2116:Wheel of time
2114:
2110:
2107:
2106:
2105:
2102:
2100:
2097:
2095:
2092:
2090:
2087:
2085:
2082:
2080:
2077:
2076:
2074:
2069:
2066:
2064:
2061:
2060:
2057:
2051:
2050:
2046:
2044:
2041:
2039:
2036:
2034:
2031:
2029:
2026:
2024:
2021:
2019:
2016:
2014:
2011:
2009:
2006:
2004:
2001:
1999:
1996:
1994:
1991:
1989:
1986:
1985:
1983:
1981:
1977:
1971:
1968:
1966:
1963:
1961:
1960:Periodization
1958:
1956:
1953:
1951:
1948:
1946:
1943:
1941:
1938:
1937:
1935:
1930:
1927:
1925:
1922:
1921:
1918:
1906:
1905:
1901:
1900:
1899:
1898:
1894:
1892:
1889:
1887:
1886:Digital clock
1884:
1882:
1879:
1875:
1872:
1868:
1865:
1863:
1860:
1859:
1858:
1855:
1853:
1850:
1848:
1845:
1843:
1840:
1836:
1833:
1832:
1831:
1828:
1824:
1821:
1820:
1819:
1816:
1815:
1814:
1811:
1810:
1808:
1806:
1802:
1796:
1795:
1791:
1789:
1786:
1784:
1781:
1779:
1776:
1774:
1771:
1769:
1766:
1764:
1761:
1759:
1756:
1754:
1751:
1747:
1744:
1742:
1739:
1737:
1734:
1733:
1732:
1729:
1728:
1726:
1724:
1720:
1714:
1711:
1709:
1706:
1704:
1701:
1699:
1696:
1694:
1691:
1689:
1686:
1684:
1681:
1679:
1676:
1674:
1671:
1669:
1666:
1664:
1663:Relative hour
1661:
1659:
1658:24-hour clock
1656:
1654:
1653:12-hour clock
1651:
1649:
1646:
1644:
1641:
1640:
1638:
1636:
1630:
1624:
1621:
1619:
1616:
1614:
1611:
1609:
1606:
1604:
1601:
1600:
1598:
1596:
1592:
1589:
1587:
1582:
1578:
1572:
1569:
1567:
1564:
1562:
1559:
1557:
1554:
1553:
1551:
1547:
1543:
1536:
1531:
1529:
1524:
1522:
1517:
1516:
1513:
1507:
1506:(free e-book)
1505:
1501:
1500:
1496:
1486:
1483:
1478:
1477:
1469:
1467:
1465:
1463:
1459:
1455:
1450:
1446:
1443:
1437:
1434:
1430:
1428:
1421:
1417:
1413:
1407:
1404:
1400:
1394:
1391:
1387:
1386:
1380:
1377:
1364:
1360:
1354:
1351:
1346:
1342:
1338:
1334:
1328:
1326:
1324:
1320:
1315:
1309:
1305:
1304:
1297:
1294:
1281:
1275:
1273:
1269:
1263:
1258:
1254:
1250:
1246:
1239:
1236:
1232:
1229: at the
1228:
1227:
1221:(1): 345â366.
1220:
1216:
1209:
1207:
1203:
1199:
1194:
1191:
1187:
1181:
1178:
1174:
1168:
1165:
1160:
1154:
1150:
1143:
1141:
1137:
1132:
1128:
1124:
1120:
1116:
1112:
1108:
1104:
1097:
1094:
1086:
1079:
1073:
1070:
1065:
1061:
1057:
1055:
1050:
1044:
1041:
1036:
1032:
1026:
1023:
1018:
1011:
1010:
1003:
1000:
995:
988:
987:
980:
977:
969:
962:
961:
954:
952:
948:
943:
942:
935:
932:
927:
925:9780176502591
921:
917:
910:
907:
902:
901:
894:
891:
884:
876:
872:
868:
864:
858:
855:
848:
843:
840:
838:
835:
833:
830:
828:
825:
823:
820:
818:
815:
813:
810:
808:
805:
803:
800:
798:
795:
793:
790:
788:
787:12-hour clock
785:
784:
779:
777:
775:
771:
767:
763:
759:
755:
751:
747:
743:
739:
735:
730:
728:
724:
719:
716:
712:
704:
700:
695:
690:
685:
683:
679:
675:
671:
667:
663:
659:
653:
650:
645:
644:
643:
640:
638:
630:
625:
619:
615:
611:
610:Paolo Uccello
607:
600:
595:
592:
588:
585:
582:
578:
575:
571:
567:
564:
560:
559:Leading zeros
557:
554:
550:
549:
548:
545:
543:
538:
534:
530:
525:
524:military time
521:
513:
508:
502:Military time
501:
499:
497:
493:
489:
485:
477:
475:
473:
466:
458:
456:
454:
450:
445:
439:
435:
429:
425:
417:
415:
412:
408:
404:
399:
397:
393:
389:
381:
376:
369: 12-hour
351: 24-hour
344:
331:
325:
323:
321:
317:
312:
306:
301:
300:
296:
293:
292:
288:
285:
284:
280:
277:
276:
272:
269:
268:
264:
261:
260:
256:
253:
252:
248:
245:
244:
240:
237:
236:
232:
229:
228:
224:
221:
220:
216:
213:
212:
206:
203:
202:
198:
195:
194:
190:
187:
186:
182:
179:
178:
174:
171:
170:
166:
163:
162:
158:
155:
154:
150:
147:
146:
142:
139:
138:
134:
131:
130:
126:
123:
122:
118:
115:
114:
108:
105:
104:
101:
100:12-hour clock
98:
96:24-hour clock
95:
94:
88:
86:
84:
80:
76:
70:
68:
64:
63:12-hour clock
48:
44:
41:in which the
40:
36:
35:24-hour clock
28:
23:
19:
3216:Decimal time
2945:Astronomical
2824:Complication
2819:Atomic clock
2606:
2434:Time capsule
2428:Tempus fugit
2426:
2348:Other fields
2047:
2028:Perdurantism
1950:Calendar era
1902:
1895:
1881:Cuckoo clock
1818:astronomical
1792:
1657:
1618:Unit of time
1549:Key concepts
1503:
1485:
1475:
1452:
1444:
1436:
1423:
1415:
1406:
1398:
1393:
1383:
1379:
1367:. Retrieved
1362:
1353:
1313:
1301:
1296:
1284:. Retrieved
1252:
1248:
1238:
1225:
1218:
1193:
1180:
1167:
1148:
1106:
1102:
1096:
1085:the original
1072:
1064:the original
1052:
1043:
1034:
1025:
1008:
1002:
985:
979:
968:the original
959:
940:
934:
915:
909:
899:
893:
857:
807:Decimal time
762:Commonwealth
750:British Rail
731:
720:
708:
687:
664:
660:
657:
641:
634:
613:
546:
532:
528:
523:
517:
481:
468:
444:Style guides
440:
436:
432:
428:23:59 (film)
400:
385:
302:24:00 equals
71:
34:
32:
18:
3226:System time
3221:Metric time
2940:Solar Hijri
2866:Water clock
2849:Radio clock
2781:Time domain
2761:Proper time
2647:Leap second
2529:Chronometry
2444:Time travel
2422:System time
2329:Time domain
2314:Proper time
2138:use of time
2109:Father Time
2089:Immortality
2079:Ages of Man
2008:Endurantism
1965:Regnal year
1945:Big History
1874:water-based
1773:Solar Hijri
1683:Hexadecimal
1633:Measurement
1595:Chronometry
1581:Measurement
1427:Moore Field
1300:The London
1286:30 November
1200:, Orloj.eu.
1188:, Orloj.eu.
827:Metric time
774:New Zealand
772:as well as
723:World War I
522:, the term
392:leap second
89:Description
39:timekeeping
33:The modern
3256:Categories
3241:Timekeeper
3194:Chronology
3178:Millennium
3064:Precession
2970:Julian day
2791:T-symmetry
2652:Solar time
2622:Civil time
2146:Chronemics
2121:Kalachakra
2033:Presentism
2018:Eternalism
1924:Chronology
1862:mechanical
1813:Main types
1731:Main types
1158:0226155110
1109:(4): 185.
1103:Metrologia
885:References
756:, and the
674:time zones
616:(1443) in
512:USS Midway
463:See also:
45:runs from
3138:Fortnight
2985:Lunisolar
2975:Leap year
2909:Gregorian
2859:stopwatch
2834:Hourglass
2814:Astrarium
2731:Spacetime
2662:Time zone
2539:Metrology
2518:standards
2402:Leap year
2319:Spacetime
2193:Yesterday
2094:Dreamtime
2068:Mythology
1955:Deep time
1867:stopwatch
1842:hourglass
1823:astrarium
1753:Gregorian
1746:Lunisolar
1723:Calendars
1713:Time zone
1586:standards
1385:The Times
1314:The Times
1131:121852011
770:Australia
715:midsummer
680:. At the
589:(GMT) or
79:ambiguity
3199:Duration
3173:Saeculum
3153:Olympiad
2995:Solstice
2924:Holocene
2901:Calendar
2801:Horology
2592:ISO 8601
2587:ISO 31-1
2462:Category
2210:Time in
2201:Tomorrow
2063:Religion
2003:Duration
1970:Timeline
1904:Timeline
1703:Sidereal
1571:Eternity
861:See the
780:See also
396:ISO 8601
388:midnight
75:medicine
67:ISO 8601
47:midnight
27:Curitiba
3168:Century
3158:Lustrum
3088:Instant
2960:Equinox
2929:Islamic
2871:Sundial
2736:Chronon
2472:Commons
2395:Related
2309:Instant
2299:Chronon
2281:Physics
2221:Geology
2212:science
2084:Destiny
1929:History
1897:History
1852:sundial
1835:quantum
1778:Chinese
1768:Islamic
1678:Decimal
1673:Chinese
1635:systems
1561:Present
1449:El Paso
1369:27 July
1111:Bibcode
721:During
601:History
581:Juliett
562:three".
537:diurnal
59:24(:00)
57:, with
55:23(:59)
51:00(:00)
3163:Decade
3118:Moment
3113:Minute
3108:Second
3078:Other
2935:Julian
2914:Hebrew
2560:offset
2412:Moment
2407:Memory
2259:period
1847:marine
1830:atomic
1805:Clocks
1763:Hebrew
1758:Julian
1693:Metric
1566:Future
1155:
1129:
1054:Lexico
922:
867:locale
629:Venice
367:
361:
355:
349:
3204:music
3143:Month
3103:Jiffy
3098:Shake
3093:Flick
2990:Solar
2980:Lunar
2955:Epact
2919:Hindu
2854:Watch
2809:Clock
2417:Space
2249:epoch
2239:chron
2197:Today
2166:tempo
2161:Music
2023:Event
1857:watch
1741:Lunar
1736:Solar
1708:Solar
1698:Roman
1688:Hindu
1303:Times
1127:S2CID
1088:(PDF)
1081:(PDF)
1013:(PDF)
990:(PDF)
971:(PDF)
964:(PDF)
849:Notes
797:Clock
701:with
492:POSIX
488:macOS
434:day.
407:colon
328:See:
294:23:00
286:22:00
278:21:00
270:20:00
262:19:00
254:18:00
246:17:00
238:16:00
230:15:00
222:14:00
214:13:00
204:12:00
196:11:00
188:10:00
180:09:00
172:08:00
164:07:00
156:06:00
148:05:00
140:04:00
132:03:00
124:02:00
116:01:00
106:00:00
3148:Year
3133:Week
3123:Hour
2577:DUT1
2516:and
2136:and
2099:KÄla
1794:List
1788:Maya
1584:and
1556:Past
1542:Time
1371:2023
1288:2012
1153:ISBN
920:ISBN
837:Time
744:and
709:The
697:The
533:p.m.
531:and
529:a.m.
486:and
472:GTFS
451:and
3128:Day
2254:era
2244:eon
2234:age
1613:TAI
1603:UTC
1341:Kew
1257:doi
1119:doi
612:'s
518:In
398:).
53:to
43:day
3258::
2572:ÎT
2567:UT
2199:â
2195:â
1608:UT
1461:^
1447:.
1418:.
1414:.
1361:.
1343:,
1339:,
1335:.
1322:^
1310::
1271:^
1253:14
1251:.
1247:.
1217:.
1205:^
1139:^
1125:.
1117:.
1107:48
1105:.
1058:.
1051:.
1033:.
1015:.
992:.
950:^
752:,
496:ls
319:^
85:.
69:.
2506:e
2499:t
2492:v
1534:e
1527:t
1520:v
1479:.
1401:.
1373:.
1290:.
1265:.
1259::
1233:.
1161:.
1133:.
1121::
1113::
1037:.
928:.
877:.
514:.
430:.
382:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
