No. The term has nothing to do with the apparent color of the moon. A blue moonโa colloquial and relatively recent term for the second full moon in a calendar monthโ happens about once every two-and-a-half years (2.7), per NASA. A full moon arrives at 29.53-day intervals, so a full moon must land in the first hours of a given month for a blue moon to occur. Because of that interval, it's possible that February has no full moon at all on occasion, as will happen in 2037, and that leads to two blue moons in a single calendar year.
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