(Q2140717)

English

Zeller's congruence

algorithm to calculate the day of the week in the Gregorian and Julian calendars

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Statements

instance of

determination of the day of the week

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formula

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named after

Christian Zeller

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discoverer or inventor

Christian Zeller

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time of discovery or invention

1882

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defining formula

h=\left(q+\left\lfloor {\frac {13(m+1)}{5}}\right\rfloor +K+\left\lfloor {\frac {K}{4}}\right\rfloor +\left\lfloor {\frac {J}{4}}\right\rfloor -2J\right){\bmod {7}}

applies to part, aspect, or form

Gregorian calendar

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h=\left(q+\left\lfloor {\frac {13(m+1)}{5}}\right\rfloor +K+\left\lfloor {\frac {K}{4}}\right\rfloor +5-J\right){\bmod {7}}

applies to part, aspect, or form

Julian calendar

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maintained by WikiProject

WikiProject Mathematics

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Commons category

Perpetual calendars

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imported from Wikimedia project

German Wikipedia

Identifiers

Dictionary of Algorithms and Data Structures ID

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1 reference

28 October 2013

Microsoft Academic ID

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1 reference

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