Pittsburgh Pirates’ Harvey Haddix pitched 12 perfect innings against the Milwaukee Braves before losing, 1–0, in the 13th.
George Willig, "the human fly," scaled the World Trade Center in New York City by attaching himself to the window washer mechanism and walking straight up until falling into police custody when he reached the top. It took Willig three and a half hours to make the climb, and $1.10 in fines—a penny per floor.
The first legal casino to be operated in the United States outside of Nevada was opened in Atlantic City.
Rwandans voted to approve a new constitution that instituted a balance of power between Hutu and Tutsi.
After more than 50 years of struggle, South Sudan declares independence and becomes Africa's 54th state.