Why Do We Have Leap Years?
Earth takes about 365.2422 days to orbit the Sun. Adding one extra day every four years keeps our calendar aligned with the seasons. Without leap days, dates tied to seasons would drift over time.
Leap Year Rules and Exceptions
A year is a leap year if it is divisible by 4, except for years divisible by 100. However, years divisible by 400 are still leap years. This rule is explained by the timeanddate.com leap year guide.
Notable Leap Year Facts
Leap Day, February 29, occurs roughly once every four years. In the Gregorian calendar, a leap year has 366 days instead of 365. Leap years are used in calendars to keep them synchronized with astronomical events.
