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In accounting, a thirteenth month is sometimes used to adjust financial statements for an entire year without affecting monthly results. For example, an organization may wish to adjust its books to reflect the fact that some of its sales and resulting payments due from customers will not be paid. If
213:
Similar names exist for additional months in calendars extended beyond thirteen months. For instance, Duodecember is a fourteenth month, Tridecember is a fifteenth month, Quattourdecember is a sixteenth month, and
Quindecember is a seventeenth month.
293:, dating an event to the eleventh day before the Kalends of Undecember. In the Julian Calendar this corresponds to December 22; in the pre-Julian calendar, with twenty-nine days in December, it would have been December 20.
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an organization only does this once per year the organization can attribute these adjustments to "Month 13" so as not to inaccurately post a full year's worth of write offs to one month.
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Some recent authors report the names "Undecember" and "Duodecember" for the two
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is a name for a thirteenth month in a calendar that normally has twelve months.
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used in most parts of the world includes only twelve months, there exist some
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357:"Chap LVIII: From the Battle of Thapsus to the Death of Caesar: 46–44 B.C."
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includes support for calendars which permit thirteen months. Although the
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Name for a thirteenth month in a calendar that normally has twelve months
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defines it as "a humorous name given to the month following
December".
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suggested these might have been called "Undecember" and "Duodecember".
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months inserted between
November and December upon the adoption of the
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112:
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seven years out of every nineteen (37%) have the "embolismic month"
50:
135:
92:, dating between the first century BC and the first century AD.
303:
Jézéquel, Jules (1937). "Why the World Needs This Reform".
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or "leap" month added in some years. For example, in the
472:"In a leap year, is the extra month Adar I or Adar II?"
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Java
Platform, Standard Edition 6: API Specification
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57:meaning "eleven". It is formed in analogy with
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518:L. Evans, Denise L.; Evans, William (2023).
111:. This claim has no contemporary evidence;
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64:which, though the twelfth month in the
490:"java.util Class Calendar: UNDECIMBER"
84:) appears in a Roman inscription from
570:Java (programming language) libraries
521:The Complete Real Estate Encyclopedia
326:Asimov, Isaac; John Bradford (1963).
7:
25:
442:Janert, Philipp K. (2007-06-04).
315:: World Calendar Association: 64.
524:. The McGraw-Hill Companies, Inc
156:Java Platform, Standard Edition
444:"Making Sense of Java's Dates"
401:. Translated by Earnest Cary.
200:Accounting (called "Month 13")
1:
194:java.util.Calendar.UNDECIMBER
586:
365:Cambridge University Press
363:. Vol. 3. Cambridge:
305:Journal of Calendar Reform
391:(1914–1927). "LIV 21.5".
196:represents such a month.
115:refers to the months as "
403:Harvard University Press
103:in 44 BC, including the
565:Latin words and phrases
476:Mi Yodeya StackExchange
263:Oxford Latin Dictionary
121:intercalates posterior"
74:Oxford Latin Dictionary
399:Loeb Classical Library
367:. pp. 347 §1269.
355:Heiland, W.E. (1909).
173:that are divided into
144:August Immanuel Bekker
239:Ophiuchus (astrology)
330:(revised ed.).
328:The clock we live on
261:Glare, P.G. (2002).
130:tells that Licinus,
265:. Clarendon Press.
72:meaning "ten". The
361:The Roman Republic
167:Gregorian calendar
160:java.util.Calendar
117:intercalates prior
66:Gregorian calendar
229:Accounting period
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555:13 (number)
389:Cassius Dio
234:Mercedonius
179:intercalary
128:Cassius Dio
97:intercalary
18:Tridecember
549:Categories
504:2009-05-22
457:2007-12-13
245:References
177:, with an
132:procurator
126:Historian
78:Undecember
47:undecimber
35:Undecimber
31:Undecember
291:1989, 331
150:Computing
86:Vercellae
45:The word
41:Etymology
218:See also
191:constant
60:December
448:On Java
154:In the
55:undecim
560:Months
500:. 2008
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371:
338:
269:
189:. The
187:Adar I
158:, the
113:Cicero
528:7 Aug
163:class
140:Greek
70:decem
53:word
51:Latin
530:2023
407:ISBN
369:ISBN
336:ISBN
267:ISBN
136:Gaul
119:and
82:Unde
134:of
88:in
33:or
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287:AE
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