During what period did the timetable created?
At what time was the schedule first devised?
At what time was the schedule emerge?
In which period did the calendar originally invented?
During what period was the calendar originally thought up?
When was the agenda firstly created?
In which period was the schedule creation?
In which period did the timetable come about for the first time?
- 04/13/01:39
- The history of calendars
