- 307 ⁞ After divorcing his wife Minervina, Constantine marries Fausta, daughter of the retired Roman Emperor Maximian.
- 1146 ⁞ Bernard of Clairvaux preaches his famous sermon in a field at Vézelay, urging the necessity of a Second Crusade. Louis VII is present, and joins the Crusade.
- 1492 ⁞ Queen Isabella of Castile issues the Alhambra Decree, ordering her 150,000 Jewish and Muslim subjects to convert to Christianity or face expulsion.
- 1561 ⁞ The city of San Cristóbal, Táchira is founded.
- 1685 ⁞ Birth of Johann Sebastian Bach, German organist and composer.
- 1717 ⁞ A sermon on "The Nature of the Kingdom of Christ" by Benjamin Hoadly, the Bishop of Bangor, provokes the Bangorian Controversy.
- 1747 ⁞ Birth of Johann Abraham Peter Schulz, German pianist and composer.
- 1774 ⁞ American Revolutionary War: The Kingdom of Great Britain orders the port of Boston, Massachusetts closed pursuant to the Boston Port Act.
- 1809 ⁞ Birth of Nikolaj Vasil'evič Gogol' Ukrainian-Russian short story writer, novelist, and playwright.
- 1822 ⁞ The massacre of the population of the Greek island of Chios by soldiers of the Ottoman Empire following an attempted rebellion, depicted by the French artist Eugène Delacroix.
- 1854 ⁞ Commodore Matthew Perry signs the Convention of Kanagawa with the Tokugawa Shogunate, opening the ports of Shimoda and Hakodate to American trade.
- 1855 ⁞ Death of Charlotte Brontë, English novelist and poet.
- 1885 ⁞ The United Kingdom establishes the Bechuanaland Protectorate.
- 1889 ⁞ The Eiffel Tower is officially opened.
- 1899 ⁞ Malolos, capital of the First Philippine Republic, is captured by American forces.
- 1906 ⁞ The Intercollegiate Athletic Association of the United States (later the National Collegiate Athletic Association) is established to set rules for college sports in the United States.
- 1909 ⁞ Serbia accepts Austrian control over Bosnia and Herzegovina.
- 1913 ⁞ The Vienna Concert Society rioted during a performance of modernist music by Arnold Schoenberg, Alban Berg, Alexander von Zemlinsky, and Anton von Webern, causing a premature end to the concert due to violence; this concert became known as the Skandalkonzert.
- 1917 ⁞ The United States takes possession of the Danish West Indies after paying $25 million to Denmark, and renames the territory the United States Virgin Islands.
- 1918 ⁞ Massacre of ethnic Azerbaijanis is committed by allied armed groups of Armenian Revolutionary Federation and Bolsheviks. Nearly 12,000 Azerbaijani Muslims are killed. ⁞ Daylight saving time goes into effect in the United States for the first time.
- 1921 ⁞ The Royal Australian Air Force is formed.
- 1930 ⁞ The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years.
- 1931 ⁞ An earthquake in Nicaragua destroys Managua; killing 2,000. ⁞ A Transcontinental & Western Air airliner crashes near Bazaar, Kansas, killing eight, including University of Notre Dame head football coach Knute Rockne.
- 1933 ⁞ The Civilian Conservation Corps is established with the mission of relieving rampant unemployment in the United States.
- 1942 ⁞ World War II: Japanese forces invade Christmas Island, then a British possession.
- 1945 ⁞ World War II: A defecting German pilot delivers a Messerschmitt Me 262A-1, the world's first operational jet-powered fighter aircraft, to the Americans, the first to fall into Allied hands.
- 1949 ⁞ The Dominion of Newfoundland joins the Canadian Confederation and becomes the 10th Province of Canada.
- 1951 ⁞ Remington Rand delivers the first UNIVAC I computer to the United States Census Bureau.
- 1957 ⁞ Elections to the Territorial Assembly of the French colony Upper Volta are held. After the elections PDU and MDV form a government.
- 1958 ⁞ In the Canadian federal election, the Progressive Conservatives, led by John Diefenbaker, win the largest percentage of seats in Canadian history, with 208 seats of 265.
- 1959 ⁞ The 14th Dalai Lama, crosses the border into India and is granted political asylum.
- 1964 ⁞ A coup d'état in Brazil establishes a military government, under the aegis of general Castelo Branco.
- 1966 ⁞ The Soviet Union launches Luna 10 which later becomes the first space probe to enter orbit around the Moon.
- 1968 ⁞ American President Lyndon B. Johnson speaks to the nation of "Steps to Limit the War in Vietnam" in a television address. At the conclusion of his speech, he announces: "I shall not seek, and I will not accept, the nomination of my party for another term as your President."
- 1970 ⁞ Explorer 1 re-enters the Earth's atmosphere after 12 years in orbit.
- 1980 ⁞ The Chicago, Rock Island and Pacific Railroad operates its final train after being ordered to liquidate its assets because of bankruptcy and debts owed to creditors.
- 1985 ⁞ The first WrestleMania, the biggest wrestling event from the WWE (then the WWF), takes place in Madison Square Garden in New York City.
- 1990 ⁞ Approximately 200,000 protesters take to the streets of London to protest against the newly introduced Poll Tax.
- 1991 ⁞ Georgian independence referendum, 1991: Nearly 99 percent of the voters support the country's independence from the Soviet Union.
- 1992 ⁞ The USS Missouri, the last active United States Navy battleship, is decommissioned in Long Beach, California. ⁞ The Treaty of Federation is signed in Moscow.
- 1995 ⁞ TAROM Flight 371, an Airbus A310-300, crashes near Balotesti, Romania, killing all 60 people on board. ⁞ Selena Quintanilla-Pérez is murdered by her fan club's president Yolanda Saldívar at a Days Inn in Corpus Christi, Texas after accusations of Saldívar embezzling money from Selena's fan club.
- 1998 ⁞ Netscape releases Mozilla source code under an open source license.
- 2004 ⁞ Iraq War in Anbar Province: In Fallujah, Iraq, four American private military contractors working for Blackwater USA, are killed after being ambushed.
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