If you’re a fan of spooky coincidences then you’ll probably love the fact the next rare blue moon is due to form on Halloween night.
A blue moon is an extra full moon occurring, you guessed it, once in a blue moon.
They usually form once every two to three years and the next one after Halloween night will not be until August 23 in 2023.
Even though it is called a blue moon, there’s no colour change in store for our lunar neighbour. The moon won’t suddenly appear with a blueish tinge.
Yet on Halloween night, the blue moon will certainly add an extra level of spookiness to any fans of the supernatural.
Royal Museums Greenwich has predicted the next blue moon will be on October 31 and explained how rare the occurrence is.
They say on their website: “Normally blue moons come only about every two or three years. In 2018 unusually, we had two blue moons in one year and only two months apart – and one was a lunar eclipse!
“The next time we will get two blue moons in a year will be 2037.”
They say: “Cultures around the world, including the Native Americans, have given names to each of the full Moons, with each typically happening in its own month.
“For example, the ‘wolf moon’ is usually the full Moon occurring within January. With the cycle of the phases of the Moon lasting approximately one month, and there being 12 months in a year, we typically have 12 full moons each year.
“However, the phases of the Moon actually take 29.5 days to complete, meaning 354 days total for 12 full cycles. This falls some way short of the 365/366 days in a calendar year: therefore, roughly every two and a half years a 13th full moon is seen.
This additional full moon does not fit with the normal naming scheme and so is instead referred to as a ‘blue moon’.”
Well no one knows for sure but the Royal Museums Greenwich have explained it could be done to a mispronunciation of the word ‘belewe’ which means ‘to betray’.
Before any supernatural fans think this may add a mystical element to the moon, its likely because moon studiers were ‘betrayed’ by the fact the moon did not stick to its one full moon a month pattern.
The Royal Museums Greenwich say: “Quite where the term blue moon came from is unclear. It may be a mispronunciation of the disused word “belewe” which means ‘to betray’.
“This may be a reference to the betrayal of the usual idea of having one full moon in each month or perhaps the “betrayal” by the Moon of worshippers attempting to determine the position and duration of Lent in the calendar year.”
Blue moon, Halloween
World news – GB – Everything you need to know about rare blue moon on Halloween