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Doomsday rule

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, drawing inspiration from Lewis Carroll's perpetual…

Finding the day of the week from a year's doomsday, Mnemonic weekday names & Finding a year's doomsday

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Finding the day of the week from a year's doomsday

Pi Day9 to 57–11U.S. Independence DayBoxing Day
7 related topics

Mnemonic weekday names

Slavic languagesEstonianGreekPortugueseHebrew
6 related topics

Finding a year's doomsday

FloorQuotientBase-10 arithmeticCommon subexpression
4 related topics

400-year cycle of anchor days

Proleptic Gregorian calendarAstronomical year numberingCommon year starting on MondaySolstices
4 related topics

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Doomsdays for contemporary years

Finding the day of the week from a year's doomsday

Mnemonic weekday names

Finding a year's doomsday

Correspondence with dominical letter

400-year cycle of anchor days

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Doomsday rule

Nodes43
Edges42
Triples19
Avg. degree1.95
Density0.046512
Components1

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Doomsday rule

Top relations

related to External links · 13
Doomsday rule → Calendar DatesWorld Ranking, Day, Doomsday, Doomsday AlgorithmFinding, Doomsday Calculator, Encyclopedia, Gregorian Calendar National, Hans-Christian Solka, Memoriad Mental Calendar Dates, October, Wayback Machine, Weekday Calculation, WeekPoem
related to Finding a year's doomsday · 4
Doomsday rule → First, For, Gregorian, The

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Important terminology

day doomsday year days years week calendar anchor gregorian leap 12 algorithm one february julian doomsdays common date dates 11

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
solsticesinstance ofand it is of course a leap year.Julian calendarThe Gregorian calendar is currently accurately lining up with astronomical events0.80text
solsticesinstance ofJulian calendarThe Gregorian calendar is currently accurately lining up with astronomical events0.80text
Doomsday rulerelated to External linksEncyclopedia0.60section
Doomsday rulerelated to External linksWeekday Calculation0.60section
Doomsday rulerelated to External linksHans-Christian Solka0.60section
Doomsday rulerelated to External linksGregorian Calendar National0.60section
Doomsday rulerelated to External linksCalendar DatesWorld Ranking0.60section
Doomsday rulerelated to External linksMemoriad Mental Calendar Dates0.60section
Doomsday rulerelated to External linksDoomsday AlgorithmFinding0.60section
Doomsday rulerelated to External linksDay0.60section
Doomsday rulerelated to External linksWeekPoem0.60section
Doomsday rulerelated to External linksDoomsday0.60section

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