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Millennium: 2nt millennium
Centuries: 17t century18t century19t century
Decades: 1750s  1760s  1770s  – 1780s –  1790s  1800s  1810s
Years: 1777 1778 177917801781 1782 1783

1780 (MDCCLXXX) wis a leap year stairtin on Seturday o the Gregorian calendar (dominical letter BA), the 1780t year o the Common Era (CE) an Anno Domini (AD) designations, the 780t year o the 2nt millennium, the 80t year o the 18t century, an the 1st year o the 1780s decade atween 1583 an 1929 an wi Julian Value: 1780 is 11 calendar days difference, which continued tae be uised till the complete conversion o the Gregorian calendar wis entirely duin in 1929.