Leap years explained. Also see this brief animated history of the modern calendar.
(via Doobybrain)
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doodle0cakes likes this
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snowmandroide reblogged this from explore-blog
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heyhappyday reblogged this from explore-blog and added:
It’s a little late to explain February 29th, I know. But then again,
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rahmiak reblogged this from explore-blog and added:
penjelasan ttg tahun kabisat :D
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explore-blog posted this
