2017年04月 / Mesoamerican calendars Wikipedia
12345678910111213The History of the Advent Calendar I Oxford Open Learning15161718192021222324252627282930Who Invented The Calendar of 365 Days The History of Calendar
At what time was the calendar invented?
In what period was the timetable initially developed?
In which period was the timetable emerge?
In what period did the calendar originally devised?
In which period was the calendar firstly imagined?
In what period was the agenda initially established?
During what period was the scheduleinception?
At what time did the schedule come about for the first time?