• The proleptic Julian calendar is produced by extending the Julian calendar backwards to dates preceding AD 8 when the quadrennial leap year stabilized...
    4 KB (466 words) - 04:11, 9 March 2024
  • The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to the dates preceding its official introduction in 1582. In...
    9 KB (894 words) - 03:39, 1 August 2024
  • noon on Monday, January 1, 4713 BC, proleptic Julian calendar (November 24, 4714 BC, in the proleptic Gregorian calendar), a date at which three multi-year...
    52 KB (6,386 words) - 04:05, 31 July 2024
  • Gregorian calendar per country Mixed-style date Old New Year Proleptic Gregorian calendar Proleptic Julian calendar Revised Julian calendar Roman timekeeping...
    77 KB (9,528 words) - 06:20, 7 September 2024
  • A proleptic calendar is a calendar that is applied to dates before its introduction. Examples include: Proleptic Gregorian calendar Proleptic Julian calendar...
    229 bytes (55 words) - 20:50, 17 March 2021
  • Thumbnail for 1 BC
    the Julian calendar (the sources differ; see leap year error for further information) and a leap year starting on Thursday in the proleptic Julian calendar...
    7 KB (722 words) - 16:43, 21 May 2024
  • Thumbnail for Mesoamerican Long Count calendar
    calculated to be August 11, 3114 BCE in the proleptic Gregorian calendar or September 6 in the Julian calendar (or −3113 in astronomical year numbering)...
    64 KB (7,330 words) - 18:15, 8 September 2024
  • international standard ISO 8601, the traditional proleptic Gregorian calendar (like the older Julian calendar) does not have a year 0 and instead uses the...
    72 KB (8,282 words) - 17:10, 16 September 2024
  • starting on Saturday by the proleptic Julian calendar, and a common year starting on Monday by the proleptic Gregorian calendar. It is the epoch year for...
    5 KB (513 words) - 14:39, 15 September 2024
  • the proleptic Revised Julian calendar was behind the proleptic Gregorian calendar. The Revised Julian calendar is the same as the Gregorian calendar from...
    32 KB (3,403 words) - 15:30, 27 August 2024