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  2. Doomsday rule - Wikipedia

    en.wikipedia.org/wiki/Doomsday_rule

    Doomsday rule. The doomsday's anchor day calculation is effectively calculating the number of days between any given date in the base year and the same date in the current year, then taking the remainder modulo 7. When both dates come after the leap day (if any), the difference is just 365y + ⁠ y / 4 ⁠ (rounded down). But 365 equals 52 × 7 ...

  3. Dominical letter - Wikipedia

    en.wikipedia.org/wiki/Dominical_letter

    The "doomsday" concept in the doomsday algorithm is mathematically related to the Dominical letter. Because the letter of a date equals the dominical letter of a year (DL) plus the day of the week (DW), and the letter for the doomsday is C except for the portion of leap years before February 29 in which it is D, we have:

  4. List of non-standard dates - Wikipedia

    en.wikipedia.org/wiki/List_of_non-standard_dates

    March 0 is used in Doomsday algorithm calculations. [23] March 2 was celebrated as February 30 by Lin-Manuel Miranda and Weird Al Yankovic for the release date of Yankovic's "The Hamilton Polka". [24] In November 2010 it was discovered that a Hanshin Tigers wall calendar incorrectly included the date November 31. Fans who had bought the ...

  5. Doomsday argument - Wikipedia

    en.wikipedia.org/wiki/Doomsday_argument

    The doomsday argument (DA), or Carter catastrophe, is a probabilistic argument that claims to predict the future population of the human species based on an estimation of the number of humans born to date. The doomsday argument was originally proposed by the astrophysicist Brandon Carter in 1983, [1] leading to the initial name of the Carter ...

  6. Category:Calendar algorithms - Wikipedia

    en.wikipedia.org/wiki/Category:Calendar_algorithms

    Doomsday rule; J. Julian day; K. Kuwaiti algorithm; Z. Zeller's congruence This page was last edited on 23 June 2022, at 06:38 (UTC). Text is available under the ...

  7. Doomsday - Wikipedia

    en.wikipedia.org/wiki/Doomsday

    Doomsday may refer to: Eschatology , a time period described in the eschatological writings in Abrahamic religions and in doomsday scenarios of non-Abrahamic religions. Global catastrophic risk , a hypothetical event explored in science and fiction where human civilization or life is at risk of partial or complete destruction.

  8. Talk:Doomsday rule - Wikipedia

    en.wikipedia.org/wiki/Talk:Doomsday_rule

    2 What is the "15th doomsday"? 2 comments. 3 Year's first Sunday method. 1 comment. 4 It’s Doomsday. ... Doomsday rule. Add languages. Page contents not supported ...

  9. Zeller's congruence - Wikipedia

    en.wikipedia.org/wiki/Zeller's_congruence

    Doomsday rule; ISO week date; Julian day; References Bibliography. Each of these four similar imaged papers deals firstly with the day of the week and secondly with ...