#georgewashington was born in Virginia on February 11, 1731, according to the then-used Julian calendar. In 1752, however, Britain and all its colonies adopted the Gregorian calendar which moved Washington's birthday a year and 11 days to February 22, 1732.
https://www.archives.gov/legislative/features/washington
George Washington's Birthday | National Archives
Enlarge George Washington, copy of painting by Gilbert Stuart, 1931 - 1932, RG 148, Records of Commissions of the Legislative Branch, George Washington Bicentennial Commission. En EspaƱol George Washington's Birthday is celebrated as a federal holiday on the third Monday in February. It is one ..
https://www.archives.gov/legislative/features/washington
