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Neil deGrasse Tyson @neiltyson
How often does a Blue Moon land on Halloween, you may ask? Depends. It could be November 1 for you, while time zones to your West are still trick-or-treating. Back in the 20th and 21st centuries, the USA saw eight Halloween Blue Moons: 1906 1925 1944 2020 2039 2058 2077 & 2096. https://t.co/KxYQeQLY6w — PolitiTweet.org