While the term "Blue Moon" is misleading, the term actually means the second full moon within a calendar month. Since it's very seldom we see a second, that's where we get the term "Once in a blue moon".
We won't get to see another blue moon for another three years until January of 2018.
Sources say if the moon does appear blue, it's because of smoke or dust in the atmosphere.
Friday night's forecast in Central and Eastern Pennsylvania is mostly clear skies.
Friday night's forecast in Central and Eastern Pennsylvania is mostly clear skies.
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Story written by Jay Skook