When Was Gregorian Calendar Invented

When Was Gregorian Calendar Invented. It is named for pope gregory xiii, who issued the papal bull inter gravissimas in 1582, announcing calendar reforms for all of catholic christendom. The reform altered the julian, or old style, system of leap years and, by removing.


When Was Gregorian Calendar Invented

Pope gregory xiii introduced calendar reforms in 1582 to correct the issue. It was developed in 1582 and was based on a design by a man named luigi lilio, also known as.

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When Was Gregorian Calendar Invented