- 1493 – Christopher Columbus sets sail from Cadiz, Spain, with a flotilla of 17 ships on his second voyage to the Western Hemisphere
- 1513 –Spanish explorer Vasco Nunez de Balboa crosses the Isthmus of Panama to reach the Pacific Ocean
- 1775 –American Revolutionary War hero Ethan Allen is captured by the British as he led an attack on Montreal
- 1789 –The first United States Congress adopts 12 amendments to the Constitution and sends them to the states for ratification
- 1890 –Mormon president Wilford Woodruff issues a manifesto formally renouncing the practice of polygamy
- 1981 – Sandra Day O'Connor is sworn in as the first female justice on the U.S. Supreme Court
- 2001 – Michael Jordan announces he was returning to basketball with the NBA's Washington Wizards
- 2003 – France reports a staggering death toll of 14,802 from a heat wave
- 2006 –The Louisiana Superdome, a symbol of misery during Hurricane Katrina, reopens for a New Orleans Saints game
Famous and Historical Birthdays - Say Happy Birthday to . . .
- Barbara Walters (TV Personality)
- Robert Gates (Secretary of Defense)
- Michael Douglas (Actor)
- Cheryl Tiegs (Model)
- Heather Locklear (Actress)
- Scottie Pippen (Basketball Player)
- Catherine Zeta-Jones (Actress)
- Hal Sparks (Actor)