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TIL that in Ukraine, Christmas is celebrated with a twelve course meal, but can't begin to eat until the youngest child watches for the first evening star to appear.

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VBKjG TIL about Belphegors Prime number, 1000000000000066600000000000001. One, followed by 13 zeroes, 666, another 13 zeroes, and one again. It’s 31 digits long and is also a palindromic prime number. Discovered by mathematician Harvey Dubner, Belphegors prime is named after the demon of inventiveness.
DQN7g TIL Benedict Arnold’s crypt was repurposed into a kindergarten classroom and his headstone is a wall decoration.
x6k01 TIL that, during the Cold War, every infantry and armor battalion in the U.S Army had one officer trained to deploy the Special Atomic Demolition Munition (SADM), commonly known as the backpack nuke
gMmZL TIL in Japan, establishments like banks & convenience stores visibly keep baseball-sized orange orbs behind the counter. These “anticrime color balls” are filled with bright pigment that burst on impact & are for employees to lob at robbers (or getaway vehicles) to improve the chance of arrest.
mx9kv TIL the title of Led Zeppelin's song "Black Dog," which reached the charts in several countries, was inspired by a black Labrador Retriever without a name that lingered and wandered around the Headley Grange recording studios when the band were recording the album the song's on.