"Blue Moon" rose on Halloween night for the first time in 76 years (VIDEO)

"Blue Moon" rose on Halloween night for the first time in 76 years.

Something happened the night that the world saw for the first time in 76 years.

Full moon on Halloween night. In the footage in the video we see the so-called "blue" moon setting illuminating San Francisco Bay Area.

Blue Moon is the name of the second full moon within a calendar month. Most years have 12 full moons appearing once a month, but in some years two full moons appear in one month. Then the second moon is called "blue". The phenomenon has nothing to do with the color of the moon, refers only to the periodicity of its phases and is observed once every two and a half years.

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