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What is a Blue Moon?

  • July 02, 2004

Most people have no idea that the term blue moon has absolutely nothing to do with the color of the moon, but describes the second full moon in a calendar month. This month we will have a blue moon. The phrase "Once in a Blue Moon" was first noted in 1824 and refers to occurrences that are uncommon, perhaps even rare. Yet, to have two full moons in the same month is not as uncommon as one might think. In fact, it occurs, on average, about every 32 months. And in the year 1999 it...