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Joseph Kaminski

History, Sociology, & More

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December 15, 2017

leap day

Quick History: Leap Year

Happy Leap Year! Our modern day Gregorian calendar is far from perfect. None of the calendar systems in use perfectly reflect the length of a tropical year, which happens to be approximately 365.242189 days long on average. There are better calendars than the one currently in use, the Gregorian calendar, which inherited its name from Pope Gregory XIII, who introduced it in October 1582.