Juneteenth is a federal holiday in the United States commemorating the emancipation of enslaved African Americans. Deriving its name from combining “June” and “nineteenth”, it is celebrated on the anniversary of the order, issued by Major General Gordon Granger on June 19, 1865, proclaiming freedom for slaves in Texas. Originating in Galveston, Juneteenth has since been observed annually in various parts of the United States, often broadly celebrating African-American culture. The day was first recognized as a federal holiday in 2021, when President Joe Biden signed the Juneteenth National Independence Day Act into law after the efforts of Lula Briggs Galloway, Opal Lee, and others.

https://en.wikipedia.org/wiki/Juneteenth