Leap years

See all leap years between 2012 and 2080.

When it's a leap year?

A leap year is a year with 366 days instead of 365, every 4 years in February one extra day is added. This is done because one year doesn't contain 365 days but 365.25 days. By adding once in the 4 years one extra additional day this problem is solved.

Every year divisible by 4 is a leap year.