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The History of The Modern Calendar - Infographic
Did you know that year 2013 is the first year after 1987 which had all its digits as distinct. Did you know that Oct 1582 had 10 days removed from the month to adjust for the shift in the year? Did you know that Sumerians had calendars way back in 4000BC?. Here are some interesting pieces of information about the history of calendars.