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DateTime::Calendar::Mayan
DateTime::Calendar::Mayan is a Perl module with the Mayan Long Count, Haab, and Tzolkin calendars....
Mayan Long Count Haab calendars Tzolkin calendars Mayan Haab
Mdate
An utility that converts Gregorian dates to Mayan Long Count dates...
Mayan gregorian dates Gregorian Mayan Long Count dates date convertor