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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 ...more
(first published July 1st 2001)
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I didn't know there was such a thing as a Calendar Nerd until I read this book. Calendrical Calculations has complete and reliable details on major calendar systems. It mixes culture with maths in a heady mix that will put your brain in epicycles.