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A '''leap year,''' in the [[Gregorian Calendar|Gregorian]] and [[Julian Calendar|Julian]] calendars, is a year containing 366 days instead of the ordinary 365. Normally, this occurs every four years, where [[February]] has an extra day, bringing the number of [[day]]s in that [[month]] to 29. Leap years occur when a year's number is a multiple of 4 (1992, 2144, 1852, etc.). However, when a year's number is a multiple of 100, it is only a leap year if the number is also a multiple of 400. Thus 1900 was not a leap year while 2000 was and 2100 will not be.
A '''leap year,''' in the [[Gregorian Calendar|Gregorian]] and [[Julian Calendar|Julian]] calendars, is a year containing 366 days instead of the ordinary 365. Normally, this occurs every four years, where [[February]] has an extra day, bringing the number of [[day]]s in that [[month]] to 29. Leap years occur when a year's number is a multiple of 4 (1992, 2144, 1852, etc.). However, when a year's number is a multiple of 100, it is only a leap year if the number is also a multiple of 400. Thus 1900 was not a leap year while 2000 was and 2100 will not be.
[[category:Dating Systems]]
[[Category:Dating Systems]]