
Neil deGrasse Tyson @neiltyson
According to Gregorian rules, only 1 in 4 century years is a leap year — the rarity of 2000’s leap day went largely unnoticed — PolitiTweet.org
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Likely AvailableNeil deGrasse Tyson @neiltyson
According to Gregorian rules, only 1 in 4 century years is a leap year — the rarity of 2000’s leap day went largely unnoticed — PolitiTweet.org