The History of the Advent Calendar from 1902 until now JolablotWhen was the schedule created?
When did the timetable initially introduced?
In what period did the schedule arise?
During what period did the calendar firstly created?
In which period did the agenda initially thought up?
During what period did the agenda initially created?
During what period was the timetable generation?
In which
period was the calendar emerge for the first time?