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Why do we have Leap Year?

Happy Leap Day!Every 4 years, the calendar we use in the United States adds an extra day in February, called Leap Day. This is added to extend the year by one day. But, do you know why we do this?

This practice started in 1582, and was introduced to keep our daily calendar on track with the position of the earth in relation to the sun, which dictates our seasonal calendar (when the different seasons start).

In simple terms, each revolution our earth makes around the sun takes approximately 365.25 days. Therefore, every 4 years, we need to add an extra day to catch up on the .25 days acquired in that period. This keeps our calendar on track, and ensures that we don’t eventually experience seasons at different times in the calendar.

If you’d like to learn more about Leap Years, check out the Wikipedia page here:

Happy Leap Day!