[Answer] What astronomical event will take place October 31, 2020?

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What astronomical event will take place October 31, 2020?

• Blue Moon (calendrical):The modern understanding of what constitutes a "Blue Moon" resulted from a printed mistake in an issue of "Sky & Telescope" from 1946. The concept took off in the 1980s, going viral in the media. A Blue Moon happens when a second full moon rises in a single calendar month. Our moon completes one cycle every 29.5 days. This means if there is a full moon lighting the sky on the first of the month, a second full moon will follow at the end of the month. Unless it's February. Source: Almanac.com

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