1. On August 21, 1780, the Battle of Camden was fought in South Carolina during the American Revolutionary War. British forces under General Charles Cornwallis defeated American forces under General Horatio Gates, marking a significant setback for the Americans in the southern theater of the war.

2. August 21, 1831, marked the beginning of the Nat Turner rebellion, one of the most significant slave uprisings in American history. Turner, an enslaved preacher, led a group of followers in a rebellion against white plantation owners in Southampton County, Virginia, resulting in the deaths of dozens of white people and hundreds of enslaved people.

3. On August 21, 1916, a devastating hurricane made landfall in South Carolina, causing widespread destruction and loss of life. The storm, known as the 1916 Great Appalachian Hurricane, remains one of the deadliest and most destructive hurricanes to hit the state.

4. The solar eclipse that occurred on August 21, 2017, was visible from South Carolina, making it one of the best viewing locations in the United States. Thousands of people traveled to the state to witness the phenomenon, which lasted for approximately two minutes.

5. In more recent years, August 21 has become known as "Solar Eclipse Day" in South Carolina, commemorating the 2017 solar eclipse. Many events and activities are held throughout the state to celebrate the occasion, including educational presentations, astronomy workshops, and viewing parties.