August 22
On August 22, 1791, The Haitian Revolution began in St. Domingue after slaves planned a rebellion.
The Haitian Revolution lasted until January 1, 1804.
Sources
Sinha, M. (2016, August 23). Why the UN remembers slave trade and abolition on this day. Time. https://time.com/4452232/unesco-haitian-abolition/
U.S. Department of State. (n.d.). U.S. Department of State. https://history.state.gov/milestones/1784-1800/haitian-rev