Once in a blue moon

11 August 2010 2:15 PM Posted by sLeEp|ezzz
Did you know what is Blue moon..?
"A very rare event which is the moon actually appearing blue, after volcanic eruptions or unusual weather conditions. According to popular usage, a blue moon refers to the second full moon that occurs in any calendar month.
On average, there will be 41 months that have two full moons in every century. By that calculation 'once in a blue moon' means once every two-and-a-half years."


Besides phrase, some people compose it as a song...

I found "U" once again... in a blue moon.... <3

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