Leap Year Calculator

*Did you know you can change the year below?

The year is . which is a {{typeOfYear}} year.

A leap year is a calendar year that has 366 days instead of the usual 365 days. This extra day is added to February which typically only has 28 or 29 days. The insertion of the extra day compensates for the fact that Earth's orbit around the sun takes 365.24 days, causing seasonal drift to slowly creep over the course of about one day every four years. Leap years are necessary to maintain accurate astronomical readings and calculations which are used in modern society.

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