The Mesoamerican Calendar Ancient Shared Time KeepingIn what period did the timetable invented?
When was the agenda first devised?
At what time was the timetable arise?
In what period did the schedule firstly invented?
During what period was the timetable initially envisioned?
In what period did the schedule firstly devised?
In what period did the agenda inception?
At what time did the schedule come about for the first time?