About National Anthem Day
By the dawn’s early light, we do believe the United States adopted “The Star Spangled Banner” as its national anthem on this very day.
Francis Scott Key wrote the famous words in his 1814 poem “Defence of Fort McHenry,” which would later be set to a popular British standard tune.
Although recognized over time by various American institutions, the song did not become the official anthem until Congress passed a resolution making it so in 1931. The bill designating "The Star-Spangled Banner" as the national anthem was adopted by the US Senate and went to President Herbert Hoover for signature. The president signed it the same day.