The Mayan Calendar 101 CalendarDuring what period did the timetable created?
In what period was the agenda initially introduced?
In which period was the calendar come into existence?
In which period did the timetable firstly invented?
During what period was the schedule initially envisioned?
In what period was the timetable initially created?
At what time did the schedule generation?
At what time did the timetable come about for the first time?
