If you've been anywhere near a calendar, you know that 2012 is a leap year, but you may not know why or how it started.
However, CheapSally.com, an online coupon retailer has created an infographic that explains the weird origins of the once-every-four-year event and other strange facts.
For instance, Karin Henriksen of Norway has given birth to three kids on three different leap days: 1960, 1964 and 1968, and the first Playboy Club ever opened in Chicago on February 29, 1960.
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