The History of the Advent Calendar I Oxford Open LearningAt what time did the schedule created?
At what time did the agenda first devised?
In which period was the calendar come into existence?
When was the agenda firstly devised?
During what period did the timetable initially imagined?
In what period did the calendar firstly created?
At what time was the schedule creation?
In what period was the agenda arise for the first time?