About five years per century end with a December blue moon, if I have my numbers right -- 31 days in December, ~29.5 day moon cycle, so you need a full moon in the first 36 hours or so of December to have another full moon in the same month. Over the long term full moons scatter randomly, so the odds of December having a blue moon is about 3/62.
About every two hundred years or so, a decade ends in a blue moon.
Funny...the moon was really beautiful here last night too and I was struck by it. Hopefully it will mark a better 2010 than 2009 was for so many people!
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About every two hundred years or so, a decade ends in a blue moon.
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And happy new year ;)
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The new year here is not quite nine hours old, and I already have a good feeling about things.
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I hope it's lucky as well!
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