#christopherclavius — Public Fediverse posts
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The #GregorianCalendar is the one used in most of the world today. It was designed by #ChristopherClavius and #AloysiusLilius, but like the #JulianCalendar, it was named after the bloke who commissioned it.
The main difference is that in the Gregorian calendar, years that are integer multiples of 400 are not leap years.