
The Tibetan calendar ({bo|t=ལོ་ཐོ|w=lo-tho}) is a lunisolar calendar, that is, the Tibetan year is composed of either 12 or 13 lunar months, each beginning and ending with a new moon. A thirteenth month is added every two or three years, so that an average Tibetan year is equal to the solar year. The Tibetan New Year celebration is Losar...
Found on
http://en.wikipedia.org/wiki/Tibetan_calendar

dating system based on a cycle of 60 Tibetan years, each of which usually has 354 days (12 cycles of the phases of the Moon). Adjustment to the ...
Found on
http://www.britannica.com/eb/a-z/t/48
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