2017年04月 / The Mayan Calendar 101 Calendar
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At what time was the timetable created?
At what time did the schedule first developed?
In which period did the timetable come into existence?
In what period did the calendar initially invented?
During what period did the agenda firstly thought up?
In what period did the timetable initially established?
In which period was the calendar generation?
In which period was the agenda emerge for the first time?