Provides the mathematical formulas and computer algorithms necessary to formulate calendars from different cultures and religions, and to determine holidays and convert dates between the various calendars (view table of contents)

Product Description: This comprehensive collection of calendars could only have been assembled by the authors of the definitive text on calendar algorithms, Calendrical Calculations. Using the algorithms outlined in their earlier book, Reingold and Dershowitz have achieved the near impossible task of simultaneously displaying the date on thirteen different calendars over a three-hundred year period...read more (view table of contents, read Amazon.com's description)

Product Description: This new edition of the successful calendars book expands the treatment of the previous edition to new calendar variants. It frames the calendars of the world in a completely algorithmic form. The authors describe fourteen calendars and how they relate to one another: the present civil calendar (Gregorian), the recent ISO commercial calendar, the old civil calendar (Julian), the Coptic and (virtually identical) Ethiopic calendars, the Islamic (Moslem) calendar; the Baha'i, the Hebrew (Jewish) calendar, the Mayan calendars, the French Revolutionary calendar, the Chinese calendar, and both the old (mean) and new (true) Hindu (Indian) calendars...read more (view table of contents, read Amazon.com's description)