Le calendrier mésoaméricain ancien temps partagéAt what time was the calendar devised?
During what period did the schedule initially devised?
During what period did the calendar come into existence?
When was the timetable originally devised?
During what period was the agenda originally conceived?
When was the timetable firstly devised?
During what period did the calendar creation?
When was the schedule arise for the first time?
