2012: A mass shooting takes place at Accent Signage Systems, in Minneapolis, Minnesota, killing six people, including the gunman who committed suicide, and wounding two others.
2008: CNSA astronaut Zhai Zhigang becomes the first Chinese person to perform a spacewalk while flying on Shenzhou 7.
1975: The last use of capital punishment in Spain sees the executions of five members of militant organisations, sparking worldwide protests against the Spanish government and the withdrawal of numerous ambassadors.
1968: The stage musical Hair opens at the Shaftesbury Theatre in London, where it played 1,998 performances until its closure was forced by the roof collapsing in July 1973.
1964: The British TSR-2 aircraft XR219 makes its maiden flight from Boscombe Down in Wiltshire.
1962: Rachel Carson's book Silent Spring is published, inspiring an environmental movement and the creation of the U.S. Environmental Protection Agency
1959: Typhoon Vera kills nearly 5,000 people in Japan.
1956: USAF Captain Milburn G. Apt becomes the first man to exceed Mach 3 while flying the Bell X-2. Shortly thereafter, the craft goes out of control and Captain Apt is killed.
1930: Bobby Jones wins the U.S. Amateur Championship to complete the Grand Slam of golf. The old structure of the grand slam was the U.S. Open, The Open Championship, U.S. Amateur, and British Amateur.
1928: The Republic of China is recognized by the United States.
1922: King Constantine I of Greece abdicates his throne in favor of his eldest son, George II.
1916: Iyasu V is proclaimed deposed as ruler of Ethiopia in a palace coup in favor of his aunt Zewditu.
1905: The physics journal Annalen der Physik received Albert Einstein's paper, "Does the Inertia of a Body Depend Upon Its Energy Content?", introducing the equation E=mc².
1903: The Wreck of the Old 97, an American rail disaster that became the subject of a popular ballad.