In 1863, President Abraham Lincoln issued the Emancipation Proclamation freeing slaves in Confederate states. Most African Americans would not learn of this act until after the areas they lived in were liberated by Union troops. On 19 June 1865, Union troops entered Galveston, Texas (Texas was a Confederate state during the war) and learned that they were freed. Celebrations began with prayers, feasts, and dance. The following year it would take place throughout Texas on the same date becoming an annual tradition  and holiday in 1980. The celebration would spread to other states and sometimes recognized as a state holiday as well. As a result of its importance to African Americans and to the United States as well, the U.S. Congress made it a national holiday in 2021 with President Biden signing the resolution of Congress, It formally began as a holiday on Monday, 20 June 2022. Per federal law, since June 19th fell on a Sunday this year, it was celebrated the following Monday as a national holiday. The formal name of the holiday is Juneteenth National Independence Day.