This Halloween is going to be an extra spooky one.

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That's because a rare blue moon is set to illuminate the sky on October 31, 2020. According to KCCI, a moon isn't considered a "blue moon" because of its color, but when it occurs. I know, tragic. This means that it most likely won't appear "blue" in the Halloween night sky.

Even though it may not be blue, a blue moon is still pretty cool. According to the report, a blue moon is when 13 full moons occur in a year instead of the normal 12 (one each month). The 13th moon is the "blue moon", hence the term "once in a blue moon". Makes sense.

There are also two types of blue moons. KCCI says that according to Earth Sky a blue moon can either be the second of two full moons in a calendar month (like the one this Halloween) or "when it’s the third of four full moons in a single season."

Although a blue moon isn't typically blue in color, it sometimes can be. Although the factors that would have to be in place for that to occur aren't ideal. The KCCI report states that a moon can appear blue if the atmosphere is filled with dust or smoke particles of a certain size (like a volcanic eruption) according to timeanddate. For example, the eruption of Mt. St. Helens in 1980 made the moon look blue.

In that case, no thanks. We'll just settle for the spooky name this Halloween.