Counting down to Christmas A history of the Advent Calendar
During what period did the timetable originated?
In what period did the calendar initially devised?
At what time did the schedule come into existence?
In which period did the schedule firstly devised?
In which period was the agenda firstly thought up?
In which period did the
schedule firstly created?
At what time was the schedule creation?
In what period did the timetable arise for the first time?