Changes

A '''leap year,''' in the Gregorian calendar, 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, 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.