GC Command Abbreviation

GC has various meanings in the Command category. Discover the full forms, definitions, and usage contexts of GC in Command.

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Most Common Command
Gregorian Calendar

Reformed calendar introduced by Pope Gregory XIII in 1582 Previous (Julian) calendar assumed year to be 3651 days, which was 0-0065 of a day in excess Gregorian calendar will be in error by one day in AD 5442

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