Why Does 2012 Have 366 Days?

(Youtube) What is a Leap Year?

Why do some years have an extra leap day and what is it for?

Also check out MinutePhysics’ video: http://www.youtube.com/watch?v=53glKEPzElA

“… what kind of a crazy universe do we live in when some years are longer than others…”?

Also see What Is The Real Mystery According To Stephen Hawking?, Was Einstein Wrong?, What Have We Learned in 2,066 Years?, How Much is 43 Quintillion? and How Come Math Works?

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