Mesoamericans Have Been Using a 260Day Ceremonial Calendar
When did the agenda created?
In what period was the schedule first devised?
In which period did the agenda come into existence?
In what period did the schedule initially devised?
In which period was the timetable firstly imagined?
In what period was the calendar initially devised?
In which period did the agenda generation?
During what period did the timetable arise
for the first time?
