In what period was the agenda devised?
In what period did the schedule first established?
During what period was the timetable arise?
When was the schedule initially created?
During what period was the calendar firstly conceived?
During what period was
the calendar firstly created?
At what time was the calendar creation?
During what period was the agenda arise for the first time?
In what period was the agenda devised?
In what period did the schedule first established?
During what period was the timetable arise?
When was the schedule initially created?
During what period was the calendar firstly conceived?
During what period was
the calendar firstly created?
At what time was the calendar creation?
During what period was the agenda arise for the first time?
