Definition: An algorithm to find the day of the week for any date.
See also Doomsday rule.
Wikipedia entry for Zeller's congruence. A summary of the International Standard Date and Time Notation ISO 8601.
Christian Zeller, Kalender-Formeln, Acta Mathematica, 9:131-6, Nov 1886.
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Entry modified 23 November 2020.
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Cite this as:
Paul E. Black, "Zeller's congruence", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed. 23 November 2020. (accessed TODAY) Available from: https://www.nist.gov/dads/HTML/zellersCongruence.html