Leap day is a time to celebrate all Gregorys!

That's right, today is leap day and it reminds me of the fact that the calendar we use is affectionately referred to as the "Gregorian Calendar!" It was named after Pope Gregory XIII, who established the calendar in 1582. The concept of the "leap day" was originally developed by Julius Caesar, but the addition of one day every four years made the year too long. So the Gregorian Calendar made the leap year rule:

Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100; the centurial years that are exactly divisible by 400 are still leap years. For example, the year 1900 was not a leap year; the year 2000 was a leap year.

To read more check out Wikipedia's pages on the Gregorian Calendar here.

If you like your calendar, thank a Gregory! :)

-t