Andreas Papandreou becomes Prime Minister of Greece, ending an almost 50-year-long system of power dominated by conservative forces.

Portland cement is patented.

In Honduras, 131 people are killed when a Boeing 727 crashes on approach to Toncontín International Airport near the nation's capital Tegucigalpa.

In Seoul, South Korea, 32 people are killed when a span of the Seongsu Bridge collapses.

In New York City, the Solomon R. Guggenheim Museum opens to the public.

Australian civilian pilot Frederick Valentich vanishes over the Bass Strait south of Melbourne, after reporting contact with an unidentified aircraft.

World War II: The city of Aachen falls to American forces after three weeks of fighting, the first German city to fall to the Allies.

The Jaffna hospital massacre is carried out by Indian peacekeeping forces in Sri Lanka, killing 70 Tamil patients, doctors and nurses.

In Boston Harbor, the 44-gun United States Navy frigate USS Constitution is launched.

Martin Luther joins the theological faculty of the University of Wittenberg.

In Lebanon, pro-Iran kidnappers claim to have abducted American writer Edward Tracy (he is released in August 1991).

First Crusade: Crusaders led by Godfrey of Bouillon, Bohemund of Taranto, and Raymond IV, Count of Toulouse, begin the Siege of Antioch.

João Álvares Fagundes discovers the islands of Saint Pierre and Miquelon, bestowing them their original name of "Islands of the 11,000 Virgins".

First Balkan War: The Greek navy completes the capture of the island of Lemnos for use as a forward base against the Dardanelles.

The capitulation of Tainan completes the Japanese conquest of Taiwan.

President Warren G. Harding delivers the first speech by a sitting U.S. president against lynching in the Deep South.

The National Mobilization Committee to End the War in Vietnam organizes a march of fifty thousand people from the Lincoln Memorial to the Pentagon.

A gas explosion kills 22 people at a shopping centre near Glasgow, Scotland.

North Korea and the United States sign an Agreed Framework that requires North Korea to stop its nuclear weapons program and agree to inspections.

The first edition of the Ernest Hemingway novel For Whom the Bell Tolls is published.