* 1026 – Pope John XIX crowns Conrad II as Holy Roman Emperor.
* 1484 – William Caxton prints his translation of Aesop's Fables.
* 1552 – Guru Amar Das becomes the Third Sikh Guru.
* 1636 – Utrecht University is founded in the Netherlands.
* 1808 – Charles IV of Spain abdicates in favor of his son, Ferdinand VII.
* 1812 – An earthquake destroys Caracas, Venezuela.
* 1830 – The Book of Mormon is published in Palmyra, New York.
* 1839 – The first Henley Royal Regatta is held.
* 1881 – Thessaly is freed and becomes part of Greece again.
* 1913 – Balkan War: Bulgarian forces invade Adrianople.
* 1917 – World War I: First Battle of Gaza – British troops are halted after 17,000 Turks block their advance.
* 1934 – The driving test is introduced in the United Kingdom.
* 1942 – World War II: In Poland, the first female prisoners arrive at Auschwitz.
* 1958 – The United States Army launches Explorer 3.
* 1958 – The African Regroupment Party is launched at a meeting in Paris.
* 1967 – Ten thousand people gather for one of many Central Park be-ins in New York City
* 1971 – East Pakistan declares its independence from Pakistan to form People's Republic of Bangladesh and the Bangladesh Liberation War begins.
* 1974 – Gaura Devi leads a group of 27 women of Laata village, Henwalghati, Garhwal Himalayas, to form circles around trees to stop them being felled and giving rise to the Chipko Movement in India.
* 1975 – The Biological Weapons Convention comes into force.
* 1976 – Queen Elizabeth II sends the first royal email, from the Royal Signals and Radar Establishment.
* 1979 – Anwar al-Sadat, Menachem Begin and Jimmy Carter sign the Israel-Egypt Peace Treaty in Washington, D.C..
* 1982 – A groundbreaking ceremony for the Vietnam Veterans Memorial is held in Washington, D.C..
* 1991 – Argentina, Brazil, Uruguay and Paraguay sign the Treaty of Asunción, establishing Mercosur, the South Common Market.
* 1995 – The Schengen Treaty comes into effect.
* 1997 – Thirty-nine bodies are found in the Heaven's Gate cult suicides.
* 1998 – Oued Bouaicha massacre in Algeria: 52 people are killed with axes and knives, 32 of them babies under the age of 2.
* 1999 – The "Melissa worm" infects Microsoft word processing and e-mail systems around the world.
* 1999 – A jury in Michigan finds Dr. Jack Kevorkian guilty of second-degree murder for administering a lethal injection to a terminally ill man.
* 2001– World Championship Wrestling is purchased by the World Wrestling Federation.
* 2005 – The Taiwanese government calls on 1 million Taiwanese to demonstrate in Taipei, in opposition to the Anti-Secession Law of the People's Republic of China. Around 200,000 to 300,000 attend the demonstration.