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The Maya, who came to prominence in the New World in the 3rd century A.D., used two calendars, based on a sacred year of 260 days and a vague year of 365 days. The least common multiple of the two calendars, called the calendar round, has 18980 days or 73 sacred years. [Dershowitz]


  Submitted: 2006-05-22 16:25:56;   Last Modified: 2009-03-13 15:04:26.

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