ellie (@eliianefenix) 's Twitter Profile
ellie

@eliianefenix

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calendar_today25-04-2019 23:57:34

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Neil deGrasse Tyson (@neiltyson) 's Twitter Profile Photo

The Leap Day alone overcorrects the calendar, requiring we remove a Leap Day every century year. But that under-corrects the calendar, requiring we put a Leap Day back in, every four centuries. Behold the Gregorian Calendar.