Why do we have Leap Years? How the Calendar Evolved

Why do we have Leap Years? And why is it on February 29? It turns out, we DON'T have them every four years. We'll take a quick look at the history of calendars and how astronomers attempted to keep the calendar in sync with astronomical time intervals.

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Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
https://www.youtube.com/watch?v=VOrl2QlPCMI
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Видео Why do we have Leap Years? How the Calendar Evolved канала Launch Pad Astronomy