When Was the Calendar Invented A Look at the History and During what period was the agenda originated?
During what period did the calendar initially devised?
During what period was the timetable emerge?
At what time was the agenda originally created?
During what period did the timetable initially conceived?
At what time was the
timetable initially devised?
In which period did the calendar creation?
At what time was the schedule emerge for the first time?
