1. On September 20, 1958, nine black students known as the "Ole Miss Nine" attempted to enroll at the University of Mississippi but were met with riots and violence from white segregationists. This event highlighted the deep-seated racism and resistance to desegregation in the state.

2. In 1973, the Mississippi River flooded and caused extensive damage to several communities along its banks. The floodwaters forced thousands of residents from their homes, and it took months to clean up and repair the damage.

3. September 20, 1976, marked the opening of the Elvis Presley Memorial Library in Tupelo, Mississippi. The library contains over 20,000 items related to Elvis's life and career and is a popular tourist attraction for fans of the "King of Rock and Roll."

4. On September 20, 2005, Hurricane Rita made landfall in Mississippi and caused extensive damage to homes, businesses, and infrastructure. The storm resulted in several fatalities and left thousands of people without power or access to basic resources.

5. In 2018, Mississippi teacher, Dwayne Michael Carter Jr., also known as Lil Wayne, released his twelfth studio album "Tha Carter V" on September 20th. The album received critical acclaim and debuted at number one on the Billboard 200 chart.