378 – Gothic War: Battle of Adrianople - A large Roman army led by Emperor Valens is defeated by the Visigoths. Valens is killed, along with over half of his army.
681 – Bulgaria is founded on the south bank of the Danube after defeating the Byzantine armies of Emperor Constantine IV south of the Danube delta.
1968 – British Eagle Flight 802 crashes near Langenbruck, north of Munich, Bavaria, Germany, killing all 48 people on board.
1969 – Members of Charles Manson's gang murder Sharon Tate, her unborn son, Abigail Folger, Wojciech Frykowski, Jay Sebring, and Steven Parent.
1970 – A Lockheed L-188 Electra plane crashes near Cuzco, Peru, killing 99 of the 100 people on board, as well as 2 people on the ground.
1971 – The Troubles: British security forces in Northern Ireland begin Operation Demetrius. In the violence that followed, hundreds are arrested or interred, thousands are made homeless, and 20 people are killed.
2005 – Space Shuttle Discovery lands safely back on Earth, after a two-week space mission, following spacewalks to carry out repairs on the Shuttle.
2012 – 2012 Summer Olympics: Nicola Adams becomes the first Olympic gold medalist in women's boxing. On the same day, Kenya's David Rudisha sets a new record in the men's 800 meters.
2018 – A Saudi airstrike in Dahyan, Yemen, kills at least 51 people, including 29 children.