A leap year is a year with one extra day inserted into February, the leap year is 366 days with 29 days in February as opposed to the normal 28 days. There are certain facts and myths associated with the leap year tradition.
The following rules decide which years are leap years:
This means that year 1800, 1900, 2100, 2200, 2300 and 2500 are not leap years, while year 2000 and 2400 are leap years. This actually means year 2000 is kind of special, as it is the first time the third rule is used in many parts of the world.