When Was the Calendar Invented A Look at the History and In what period did the agenda devised?
During what period was the agenda
initially introduced?
In what period was the schedule come into existence?
In which period did the timetable firstly devised?
During what period was the schedule originally envisioned?
In which period did the schedule initially introduced?
During what period was the schedule inception?
At what time was the calendar come about for the first time?