1. On September 22, 1777, the Battle of Brandywine took place in Chadds Ford, Pennsylvania, just a few miles from the Delaware border. Despite a valiant effort by American troops, they were ultimately defeated by the British and forced to retreat.

2. On September 22, 1962, Middletown High School held its first homecoming parade. The tradition continues to this day, with the parade and associated festivities drawing large crowds each fall.

3. In 1970, the Wilmington 10 were convicted of arson and conspiracy in connection with riots that had taken place in 1968. The case was steeped in controversy, with many supporters arguing that the defendants had been unfairly targeted due to their political views. The convictions were eventually overturned in 1980, with a federal court ruling that the prosecution had withheld evidence that could have exonerated the defendants.

4. On September 22, 1981, the Delaware Supreme Court ruled that the state's obscenity laws were unconstitutional. The case, Barnes v. Glen Theatre, involved a strip club that had been charged with violating the state's laws against public nudity. The court's decision paved the way for other states to reexamine their own obscenity laws.

5. In recent years, September 22 has been designated as National Voter Registration Day in the United States. The day is intended to raise awareness about the importance of voting and to make it easier for people to register to vote. In Delaware, various organizations and government agencies have partnered to hold events and rallies on this day to encourage voter participation.