Template:Sequence of the Day for December 21

Intended for: December 21, 2013

Timetable

• First draft entered by Alonso del Arte on December 16, 2012 ✓
• Draft to be reviewed by October 21, 2013
• Draft to be approved by November 21, 2013

Yesterday's SOTD * Tomorrow's SOTD

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A081244: Named periods in the Mayan/mesoamerican calendars.

{ 1, 20, 260, 360, 365, 7200, 18980, 144000, 2880000, 57600000, 1152000000, 23040000000 }

The periods are named kin, winal, Tzolkin year, tun, Haab year, katun, Calendar Round, baktun, pictun, calabtun, kinchiltun, alautun. With approximately 63 million years, the alautun is probably the longest named period in any calendar. December 21, 2012 marked the end of the 13th baktun, causing some concern over the widely misunderstood prophesied descent of the god of war. But the tablet inscribed with that prophecy is incomplete, so we don’t know what, if anything, the Mayans expected the god of war to do upon his descent.