Calendrical calculations: The ultimate edition

Edward M. Reingold, Nachum Dershowitz

Research output: Book/ReportBookpeer-review


An invaluable resource for working programmers, as well as a fount of useful algorithmic tools for computer scientists, astronomers, and other calendar enthusiasts, The Ultimate Edition updates and expands the previous edition to achieve more accurate results and present new calendar variants. The book now includes coverage of Unix dates, Italian time, the Akan, Icelandic, Saudi Arabian Umm al-Qura, and Babylonian calendars. There are also expanded treatments of the observational Islamic and Hebrew calendars and brief discussions of the Samaritan and Nepalese calendars. Several of the astronomical functions have been rewritten to produce more accurate results and to include calculations of moonrise and moonset. The authors frame the calendars of the world in a completely algorithmic form, allowing easy conversion among these calendars and the determination of secular and religious holidays. LISP code for all the algorithms is available in machine-readable form.
Original languageEnglish
Place of PublicationCambridge
PublisherCambridge University Press
Number of pages618
ISBN (Electronic)1107415055, 1108546935, 1108548032, 9781107415058
ISBN (Print)9781107057623
StatePublished - 2018

ULI Keywords

  • uli
  • Calendar -- Mathematics

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