1. In 1865, General Robert E. Lee, commander of the Confederate Army, surrendered to General Ulysses S. Grant, effectively ending the American Civil War. This surrender took place in Appomattox Court House, Virginia, which was under Union control but only about 100 miles from Washington, D.C.

2. In 1963, President John F. Kennedy signed the Equal Pay Act into law, which prohibited sex-based wage discrimination. This was a significant step towards gender equality in the workforce.

3. In 2005, a small airplane crashed into a building in downtown Washington, D.C. The pilot, who was the only person on board, died in the crash, and several people in the building were injured. The cause of the crash was never determined.

4. In 2015, the Washington Nationals became the first team in Major League Baseball history to hit two grand slams in the same inning. The feat occurred in the third inning of a game against the Milwaukee Brewers.

5. In 2018, thousands of teachers in Washington, D.C. participated in a one-day strike to protest low pay and lack of funding for schools. The strike, which was organized by the Washington Teachers' Union, resulted in the closure of schools across the city.