1780 – American army officer Benedict Arnold defects to the British
1955 – The Royal Jordanian Air Force is founded
1981 – Sandra Day O’Connor is sworn in as the first female US Supreme Court Justice
1988 – Pope John Paul II beatifies Friar Junípero Serra, founder of the first Californian missions
1997 – Britain’s Andy Green sets a jet-powered car record of 714 mph
2005 – Presidents Cup Golf, Robert Trent Jones GC: Chris DiMarco, Jim Furyk, and Phil Mickelson unbeaten as US beat International team 18½–15½
2022 – Cuba legalizes same-sex marriage as part of a new family code in a national referendum
2023 – Ukraine’s military claims a missile strike three days ago kills the commander of Russia’s Black Sea Fleet in Sevastopol