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The Doomsday rule, Doomsday algorithm or Doomsday method is an algorithm of determination of the day of the week for a given date. It provides a perpetual calendar because the Gregorian calendar moves in cycles of 400 years. The algorithm for mental calculation was devised by John Conway in 1973, [1] [2] drawing inspiration from Lewis Carroll ...
For determination of the day of the week (1 January 2000, Saturday) the day of the month: 1 ~ 31 (1) the month: (6) the year: (0) the century mod 4 for the Gregorian calendar and mod 7 for the Julian calendar (0). adding 1+6+0+0=7. Dividing by 7 leaves a remainder of 0, so the day of the week is Saturday. The formula is w = (d + m + y + c) mod 7.
In the Gregorian calendar, New Year's Day is the first day of the calendar year, 1 January.Most solar calendars (like the Gregorian and Julian) begin the year regularly at or near the northern winter solstice, while cultures and religions that observe a lunisolar or lunar calendar celebrate their Lunar New Year at less fixed points relative to the solar year.
French Republican Calendar of 1794, drawn by Philibert-Louis Debucourt. The French Republican calendar (French: calendrier républicain français), also commonly called the French Revolutionary calendar (calendrier révolutionnaire français), was a calendar created and implemented during the French Revolution, and used by the French government for about 12 years from late 1793 to 1805, and ...
Shutterfly produces the most elegant, custom-made photo books — and right now, you can snap up a discount. Skip to main content. Lifestyle. 24/7 help. For premium support please call: 800-290 ...
Woah! Get a $15 credit toward your next purchase on Shutterfly when you open a new account. Once you've shared your name, e-mail and set up a password, click on "My Shutterfly" in the top right ...
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