Today we appreciate how humans found a way to keep our calendars fairly regular despite our planet taking an imprecise number of spins (365.2422) to orbit the sun. Adding an extra day every 4 years — with a few exceptions! — allows us to keep our calendar in sync w/the seasons. pic.twitter.com/lVB9BFJb6G
— Massachusetts Institute of Technology (MIT) (@MIT) February 29, 2024
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