Dealing with an odd-sized year (365.024219 days) is not as easy as you think. Not only do we have the popular Gregorian Calendar (4-year cycles, with “by-years”), but some geek gurus have proposed the Earthian Calendar (33-year! cycles). There’s even a connection to Stonehenge.
Update (3 March). A careful look at the Earthian Calendar site reveals a calendar generator! This year’s calendar reveals the 2012 leap day as 11 Pisces 0004 Earthian (or Copernican, as the author prefers to call it).
Tips from Gizmodo and The Geek Press.
The Random Texan 
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