A Brief History of Time and Calendars MacTutor History of In which period did the schedule originated?
During what period was the agenda first devised?
In which period did the calendar come into existence?
In what period did the timetable firstly invented?
In which period was the agenda initially envisioned?
In which period did the schedule initially established?
In what period did the timetable inception?
In what period did the agenda come about for the first time?
