Why was there no leap year in 1900?
1900 was not a leap year because 1900 is not divisible by 400. Read ahead for some good information about which years are leap years: In the Gregorian calendar, a normal year consists of 365 days. Because the actual length of a sidereal year (the time required for the Earth to revolve once about the Sun) is actually 365.2422 days, a “leap year” of 366 days is used once every four years to eliminate the error caused by three normal (but short) years. This would make any year that is evenly divisible by 4 a leap year: for example, 1988, 1992, and 1996 are leap years. However, there is still a small error that must be accounted for (because the extra amount of days in the sidereal year are not quite a quarter day… .2422 is less than .25). To eliminate this error, the Gregorian calendar stipulates that a year that is evenly divisible by 100 (for example, 1900) is a leap year only if it is also evenly divisible by 400. For this reason, the following years ARE NOT leap years 1700, 1800, 19
