Anno Domini WikipediaIn what period was the calendar originated?
In what period
did the timetable first introduced?
During what period did the calendar come into existence?
During what period was the agenda initially devised?
In which period was the timetable originally conceived?
During what period did the calendar initially created?
At what time was the timetable generation?
When was the timetable emerge for the first time?
- 04/13/01:39
- Mesoamerican calendars Wikipedia