What is a Leap Year?
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Also check out MinutePhysics’ video: http://www.youtube.com/watch?v=53glKEPzElA & SciShow: http://www.youtube.com/watch?v=HnDsXhQHrEw
Help support videos like this: https://www.patreon.com/cgpgrey
Also check out MinutePhysics’ video: http://www.youtube.com/watch?v=53glKEPzElA & SciShow: http://www.youtube.com/watch?v=HnDsXhQHrEw