https://prole.wiki/w/index.php?action=history&feed=atom&title=Gregorian_calendarGregorian calendar - Revision history2026-10-30T03:48:21ZRevision history for this page on the wikiMediaWiki 1.43.11https://prole.wiki/w/index.php?title=Gregorian_calendar&diff=86001&oldid=prevLiterallywho Ingodsname: Created stub2025-08-22T22:27:05Z<p>Created stub</p>
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The '''Gregorian calendar''' is the most widespread [[calendar]] in the [[Earth|world]] today, adopted by the [[Europe|European]] powers due to its accuracy and then spread to the rest of the world during the [[Age of Imperialism|age of imperialism]]. It was primarily devised by the [[Italians|Italian]] astronomer [[Luigi Lilio]] before [[Inter gravissimas|being promulgated]] by [[Pope]] [[Gregory XIII]] (whom the calendar is named after) on 24 February 1582. It was based on the earlier [[Julian calendar]], which consisted of twelve [[months]] varying in length from 28 to 31 [[days]] for a combined total of 365 days per [[common year]]. Every fourth year according to the Julian calendar was a [[leap year]] without exception, which was slightly inaccurate and led to the calendar falling out of sync with the Earth's orbit around the [[Sun]], losing one day every 129 years. The Gregorian calendar solved this problem by eliminating leap days on years which weren't divisible by 400.</div>Literallywho Ingodsname