What makes a blue moon on Halloween so rare? This year’s blue moon is even more spectacular is that the bright, Halloween’s full moon was visible to the entire world, rather than just parts of it. This has not occurred since WWII in 1944.
What makes a blue moon on Halloween so rare? This year’s blue moon is even more spectacular is that the bright, Halloween’s full moon was visible to the entire world, rather than just parts of it. This has not occurred since WWII in 1944.