The MayanLongCountcalendar begins in 3114 BC, and the 13th Baktun ends around December 21, 2012.
玛雅人的历法从公元前3114年开始,那么第13个白克顿大约在2012年12月21日结束。
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The Solstice1 on December 21, 2012, precisely at 11:11 AM Universal Time, marks the completion of the 5,125 year Great Cycle of the Ancient MayanLongCountCalendar.
This date is the end of the Mayanlong-count period but then, just as your calendar begins again on January 1, another long-count period begins for the Mayancalendar.