History Of The Gregorian Calendar

History Of The Gregorian Calendar. It was admirably close to the actual length of the year, as it turns out, but the julian calendar was not. After years of consultation and research, pope gregory xiii signed a papal bull in february 1582 promulgating the reformed calendar that came to be known as the gregorian calendar.

Before today’s gregorian calendar was adopted, the older julian calendar was used. Learn about the gregorian calendar and its history, such as who invented the gregorian calendar.