Fun fact: early Christians decided that their “Christ” was born on December 25th because that was the date of the big Roman holiday of Saturnalia. At the time, December 25th wasn’t anything else special in the calendar, because the entire calendar had been shifted by incorrectly applied leap years. Originally, though, Julius Caesar’s calendar was defined to have March 25th as the vernal equinox, making December 25th roughly the most common date of the winter solstice.

So, happy Secular Capitalist Gift-Giving Holiday Vaguely Associated With A Tree On The Former Most Common Date Of The Winter Solstice! (Or, less accurately but shorterly, “Merry Christmas!”)

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