What is Leap Year exactly? Simply put, it’s basically a catch-up day once every four years due to the disparity between the solar system and the Gregorian calendar. A complete orbit of the earth around the sun takes exactly 365.2422 days to complete, but the Gregorian calendar uses 365 days. So leap seconds - and leap years - are added as means of keeping our clocks (and calendars) in sync with...

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