It's not even every 4 years – because years ending in ’00’ aren't leap years unless the whole number is evenly divisible by 4
(2000 was, 1900 @ 2100 are not)
— Warren Myers ?? (@warrenmyers) February 29, 2020
from Twitter https://twitter.com/warrenmyers
February 29, 2020 at 12:30PM
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