1. The Battle of Eutaw Springs took place on September 20, 1781, in present-day Orangeburg County. It was the last major engagement of the American Revolutionary War in South Carolina and resulted in a British withdrawal from the area.

2. In 1893, the South Carolina Inter-State and West Indian Exposition opened in Charleston on September 20th. It was a world's fair-style event designed to showcase the economic and cultural achievements of the region.

3. On September 20, 1940, Clemson University's Memorial Stadium (also known as Death Valley) hosted its first game. The Tigers defeated Presbyterian College 32-13 in front of over 12,000 fans.

4. On September 20, 1961, Hurricane Esther made landfall near Charleston. The Category 4 storm caused extensive damage across the state, including widespread flooding and power outages.

5. In 2005, the Hunley submarine was raised from the ocean floor off the coast of Charleston on September 20th. The Civil War-era vessel had sunk in 1864 and was the first submarine in history to sink an enemy warship. Its recovery was a major scientific and historical achievement.