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Who invented the modern calendar?
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Who invented the modern calendar?
Nowadays it’s easy to take the calendar for granted — nations across the world have agreed that (for business purposes) each year is twelve months long. But how did we get this calendar in the first place? Tune in and find out.
Video Length: 166
Date Found: April 10, 2010
Date Produced: April 09, 2010
View Count: 0
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