2017年04月 / Calendar Roman Ancient Lunar
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The Calendar System When was the agenda invented?
In what period was the schedule first devised?
In what period did the agenda arise?
In which period was the agenda initially devised?
During what period did the timetable initially imagined?
At what time did the agenda initially devised?
In what period did the schedule generation?
During what period was the calendar emerge for the first time?