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31st January 2018
11:32am GMT

A blood moon during a lunar eclipse in New Zealand in 2015 (Credit: Phil Walter)[/caption]
The lunar cycle is 29 days long whereas some months are 31 days long, meaning some years see 13 full moons and occasionally two of these celestials fall in the same month.
The term "blue" comes from the phrase "once in a blue moon," because of how rarely two full moons fall in the same month.
Much of Asia and America will see the rare occurrence, with the eclipse best visible in the western half of the US and Canada before the moon sets early on Wednesday morning, and across the Pacific into Asia as the moon rises Wednesday night into Thursday.
The UK, Europe and Africa will also miss out on seeing the red tinge on the super moon as they'll be unable to see the lunar eclipse.
The moon, however, will still be much bigger and brighter than usual in these areas.
People in the eastern Hemisphere saw their last Blue Moon total lunar eclipse in 1982, for the Western Hemisphere, this eclipse will be the first blue moon total eclipse since 1866.