Skies mostly clear for Halloween’s full, blue moon

This year a full moon will shine on Halloween night.

Not only will this be a full moon, the Farmer’s Almanac said, it will be a blue moon, or the second full moon to take place in a month, as well as the first full moon to shine on all time zones on Halloween since 1944.

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Skies will be mostly clear so few clouds will be in the way to obscure the full moon, according to the National Weather Service in Wilmington.

A full moon on Halloween generally happens every 19 years in a pattern called the Metonic Cycle. However, due to slight variations in the moon’s orbit and the number of leap days that occur over a 19-year time span the cycle can vary by a day or so, pushing the past three Halloween-time full moons in 1963, 1982 and 2001 back to Nov. 1, the almanac said.

In addition, any full moon on Halloween — which falls on Oct. 31 — would by definition be a blue moon because lunar cycles are only 29.5 days long.

The next full moon on Halloween will come in 2039, according to the almanac.

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