"Once in a Blue Moon" - What's Special About Hallowe'en This Year?

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Blue moons aren't actually that uncommon, depending on which definition you use. The oldest definition of a Blue Moon seems to be that it is "the third full moon in any season in which four full moons occur". Since there are four seasons, each of 3 months, and the moon is full approximately once a month, there are normally only three full moons in a season, but it sometimes happens that the full moon can occur four times in three months. This happens about every two or three years. The more recent definition (and the one most often used today) is that a Blue Moon is the second full moon in any calendar month. This can happen only when a full moon occurs in the first few days of any month which is longer than 28 days. Again, these aren't that infrequent. The last Blue Moon by this definition happened on March 31, 2018 (and the one previous to that was on January 31 that year). This year, the full moon of October 31 will be a Blue Moon. It doesn't happen very often that a full moon happens on October 31 and it is even less frequently that the full moon is visible in all time zones on that date. In fact , the last time that happened was in 1944, 76 years ago and the next will be in 2039. If you get a good, cloudless sky this year, will you be watching to see the witches fly across the face of the moon or are there altogether too many spooky things happening this year for it to matter? I don't remember the Hallowe'en moon of 1944 (I would have been fast asleep in bed) and I don't expect to be around in 2039, so this will be my only chance to see this rather special moon. I don't expect to see anyone testing the aerial capabilities of broomsticks, though!