* 44 BC – Casca, Cicero and Cassius decided, in the night before the Assassination of Julius Caesar, that Mark Antony should stay alive.
* 313 – Emperor Jin Huidi is executed by Liu Cong, ruler of the Xiongnu state (Han Zhao).
* 1381 – Chioggia concludes an alliance with Zadar and Trogir against Venice, which becomes changed in 1412 in Šibenik.
* 1489 – The Queen of Cyprus, Catherine Cornaro, sells her kingdom to Venice.
* 1590 – Battle of Ivry: Henry of Navarre and the Huguenots defeat the forces of the Catholic League under the Duc de Mayenne during the French Wars of Religion.
* 1647 – Thirty Years' War: Bavaria, Cologne, France and Sweden sign the Truce of Ulm.
* 1757 – Admiral Sir John Byng is executed by firing squad aboard HMS Monarch for breach of the Articles of War.
* 1780 – American Revolutionary War: Spanish forces capture Fort Charlotte in Mobile, Alabama, the last British frontier post capable of threatening New Orleans in Spanish Louisiana.
* 1782 – Battle of Wuchale: Emperor Tekle Giyorgis pacifies a group of Oromo near Wuchale.
* 1794 – Eli Whitney is granted a patent for the cotton gin.
* 1885 – The Mikado a light opera by W.S. Gilbert and Arthur Sullivan, had its first public performance in London.
* 1900 – The Gold Standard Act is ratified, placing United States currency on the gold standard.
* 1903 – The Hay-Herran Treaty, granting the United States the right to build the Panama Canal, is ratified by the United States Senate. The Colombian Senate would later reject the treaty.
* 1910 – Lakeview Gusher, the largest U.S. oil well gusher near Bakersfield, California, vented to atmosphere.
* 1915 – World War I: Cornered off the coast of Chile by the Royal Navy after fleeing the Battle of the Falkland Islands, the German light cruiser SMS Dresden is abandoned and scuttled by her crew.
* 1931 – Alam Ara, India's first talkie film, is released.
* 1939 – Slovakia declares independence under German pressure.
* 1942 – Orvan Hess and John Bumstead became the first in the world to successfully treat a patient, Anne Miller, using penicillin.
* 1943 – World War II – The Kraków Ghetto is 'liquidated'.
* 1945 – World War II – The R.A.F. first operational use of the Grand Slam bomb, Bielefeld, Germany.
* 1951 – Korean War: For the second time, United Nations troops recapture Seoul.
* 1964 – A jury in Dallas, Texas, finds Jack Ruby guilty of killing Lee Harvey Oswald, assumed assassin of John F. Kennedy.
* 1967 – The body of President John F. Kennedy is moved to a permanent burial place at Arlington National Cemetery.
* 1972 – Italian publisher and former partisan Giangiacomo Feltrinelli is killed by an explosion near Segrate.
* 1972 – Sterling Airways Flight 296 crashed near Kalba in the United Arab Emirates. All 112 passengers and crew were killed.
* 1978 – The Israeli Defense Force invades and occupies southern Lebanon, in Operation Litani.
* 1979 – In China, a Hawker Siddeley Trident crashes into a factory near Beijing, killing at least 200.
* 1980 – In Poland, a plane crashes during final approach near Warsaw, killing 87 people, including a 14-man American boxing team.
* 1984 – Gerry Adams, head of Sinn Féin, is seriously wounded in an assassination attempt in central Belfast.
* 1994 – Timeline of Linux development: Linux kernel version 1.0.0 is released.
* 1995 – Space Exploration: Astronaut Norman Thagard becomes the first American astronaut to ride to space on-board a Russian launch vehicle.
* 2006 – Members of the Chadian military fail in a coup d'état attempt.
* 2007 – The Left Front government of West Bengal sends at least 3,000 police to Nandigram in an attempt to break Bhumi Uchhed Pratirodh Committee resistance there; the resulting clash leaves 14 dead.
* 2008 – A series of riots, protests, and demonstrations erupted in Lhasa and elsewhere in Tibet.