- Proleptic calendar
Proleptic calendar may refer to:
*
Proleptic Gregorian calendar
*Proleptic Julian calendar
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Proleptic calendar
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Proleptic Gregorian calendar — The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to dates preceding its official introduction in 1582. It has been defined in the international standard ISO 8601.Most Maya scholars use the Gregorian… … Wikipedia
Proleptic Julian calendar — The proleptic Julian calendar is produced by extending the Julian calendar to dates preceding AD 4 when its quadrennial leap year stabilized. The leap years actually observed between its official implementation in 45 BC and AD 4 were erratic, see … Wikipedia
Calendar era — A calendar era is the year numbering system used by a calendar. For example, the Gregorian calendar numbers its years in the Western Christian era (the Coptic and Ethiopic churches have their own Christian eras, see below). The instant, date, or… … Wikipedia
proleptic — adjective /pɹoʊˈlɛptɪk/ a) Of a calendar, extrapolated to dates prior to its first adoption; of those used to adjust to or from the Julian calendar or Gregorian calendar. b) Describes an event as having been assigned too early a date. Syn:… … Wiktionary
Gregorian calendar — For the calendar of religious holidays and periods, see Liturgical year. For this year s Gregorian calendar, see Common year starting on Saturday. 2011 in other calendars Gregorian calendar 2011 MMXI … Wikipedia
Julian calendar — The Julian calendar began in 45 BC (709 AUC) as a reform of the Roman calendar by Julius Caesar. It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year (known at… … Wikipedia
Mesoamerican Long Count calendar — Long Count redirects here. For the 1927 boxing match, see The Long Count Fight. Detail showing three columns of glyphs from a portion of the 2nd century CE La Mojarra Stela 1. The left column gives a Long Count date of 8.5.16.9.7, or 156 CE. The… … Wikipedia
Revised Julian calendar — The Revised Julian calendar, also known as the Rectified Julian calendar, or, less formally, New calendar, is a calendar, originated in 1923, which effectively discontinued the 340 years of divergence between the naming of dates sanctioned by… … Wikipedia
Maya calendar — Maya civiliza … Wikipedia
Hindu calendar — The Hindu calendar used in ancient times has undergone many changes in the process of regionalization, and today there are several regional Indian calendars, as well as an Indian national calendar. Most of these calendars are inherited from a… … Wikipedia
