Pope Gregory XIII gave us the leap year – but his legacy goes so much further

Pope Gregory XIIIPope Gregory XIII (7 January 1502 – 10 April 1585), born Ugo Boncompagni, was the head of the Catholic Church from 13 May 1572 to his death in 1585. He is best known for commissioning and being the namesake for the Gregorian calendar, which remains the internationally accepted civil calendar to this date. Pope Gregory was the one who created the Leap Year, and February 29th which comes every four years.
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