Celebrate the Blue Moon This Halloween: Rare Event Details

October event

You may think trick-or-treating will be off-limits in some regions this year, but a rare event in the sky can’t be stopped even by the coronavirus. Prepare for two full moons this October, including a unique “blue moon” on Halloween!

The first full moon is dubbed the “harvest moon,” and will be shining on October 1, while the other, the blue moon, on October 31, just in time for a special Halloween. 

The last time such an event occurred was back in 2001, but only in the Pacific and Central time zones. According to the Farmers’ Almanac, the US time zones were last delighted to see a full moon on Halloween in 1944. Here is what you need to know. 

Why is So Rare?

Well, the so-called blue moon on Halloween is as rare as any full moon on that day. Tony Rice, a NASA expert, states that a Halloween full moon has to be always a blue moon because the moon cycles are approximately 29.5 days, and Halloween is, of course, always on October 31.

So, if there’s really a full moon on Halloween, it has to be the second full moon of the month – a blue moon. 

And back to how rare is this event, astronomers tell the Farmers’ Almanac that an October 31 full moon occurs once every 19 years. But that could change. Usually, the moon’s cycle of phases brings us a full moon early on November 1 instead of on Halloween. 

Sometimes we see a Halloween full moon only once every 38 years, which is truly sad. 

The Next Halloween Blue Moon

According to the Farmers’ Almanac, the upcoming Halloween blue moon is expected in 2039, 2058, 2077, and 2096. You can notice the 19-year cycle five straight times.

There are also two cases worth noting. The first is when the moon will be full on November 29, 2029, and the other on October 30, 2031. The Halloween on both of those years will bring a near-full moon. 

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