Juneteenth – Wikipedia

Juneteenth [c] (officially Juneteenth National Independence Day and also known as Jubilee Day, [3] Emancipation Day, [4] [5] Freedom Day, and Black Independence Day [6]) is a federal holiday in the United States commemorating the emancipation of enslaved Black Americans. It is also often observed for celebrating African-American culture.

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