1. In 1961, John F. Kennedy was inaugurated as the 35th President of the United States on January 20. His famous inaugural address included the quote, "Ask not what your country can do for you, ask what you can do for your country."

2. In 1981, the first national observance of Martin Luther King Jr. Day was held on January 20. This holiday honors the civil rights leader's legacy and achievements.

3. In 2009, Barack Obama was inaugurated as the 44th President of the United States on January 20. He was the first African American to hold the office, and his inauguration drew one of the largest crowds ever seen in Washington D.C.

4. In 2017, Donald Trump was inaugurated as the 45th President of the United States on January 20. His inauguration was met with protests and controversy, including a dispute over the size of the crowd in attendance.

5. January 20 is also the anniversary of the first public screening of the film "Gone with the Wind" in Washington D.C. in 1940. The historic film went on to win ten Academy Awards, including Best Picture.