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When is "Once in a blue moon????"

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asked Sep 25, 2013 in Language by Noodlelover Inquisitive Expert (1,710 points)
recategorized Dec 20, 2013 by Foodie
   

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The term blue moon is presently to be utilized generally to spell it out a second complete full moon within a one solar calendar month, which usually occurs just about every 2 to 3 years (seven times in the Metonic period of 19 years). Metaphorically, a blue moon is really a rare function, like your expression after inside a blue moon.
answered Nov 28, 2013 by smartguy Inquisitive Expert (111,120 points)
selected Jul 17, 2014 by Noodlelover

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