Blue Moon - 12/31/2009

A blue moon is a full moon that is not timed to the regular monthly pattern. Most years have twelve full moons which occur approximately monthly, but in addition to those twelve full lunar cycles, each solar calendar year contains an excess of roughly eleven days compared to the lunar year. The extra days accumulate, so that every two or three years, there is an extra full moon. The extra moon is called a "blue moon".
This New Year's Eve, there will be a blue moon in the sky. What's more, this New Year's Eve, people living in the Far East will see a lunar eclipse, making this an even rarity. A blue-moon eclipse only happens once roughly every 15 to 20 years.

Blue Moon Calendar:
2009: December 2, December 31 (Blue Moon on New Year's Eve)
2012: August 2, August 31
2015: July 2, July 31



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