Have a look at the whos, whats and whens of leap year through time

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February, 29, otherwise know as leap year day, is shown on a calendar Sunday, Feb. 25, 2024, in Overland Park, Kan. Because it actually takes a bit longer than 365 days for the Earth to revolve around the sun, an extra day is added to the calendar in February every four years to make up make up for the that extra time. (AP Photo/Charlie Riedel)