On January 21

A fire at a hotel at the Kartalkaya ski resort in Turkey's Bolu Province results in 78 people killed.

Millions of people participated in the Women's March in Washington, D.C., and around the world to advocate for legislation and policies on human rights and other issues.

Demonstrations against alleged corruption in the Albanian government led to the killings of four protesters in Tirana by the Republican Guard.

The U.S. House of Representatives voted 395–28 to reprimand Newt Gingrich for ethics violations, making him the first Speaker of the House to be so disciplined.

The DeLorean Motor Company completed the first production car of the DMC DeLorean at its factory in Northern Ireland.

Concorde, an Anglo-French supersonic airliner, began scheduled commercial flights to London, Paris, Bahrain, and Rio de Janeiro.

Tripura, formerly part of the independent Twipra Kingdom, became a state of India.

Vietnam War: The People's Army of Vietnam attacked Khe Sanh Combat Base, a U.S. Marines outpost in Quảng Trị province, South Vietnam, starting the Battle of Khe Sanh.

A B-52 bomber carrying four nuclear weapons crashed onto sea ice near Thule Air Base, Greenland, causing localized radioactive contamination.

Mount Lamington, a volcano in Papua New Guinea, erupted (pictured) and killed more than 2,900 people.

Isaac Isaacs (pictured) became the first Australian-born governor-general of Australia.

The First Dáil convened at the Mansion House in Dublin and adopted a declaration of independence calling for the establishment of the Irish Republic.

French Revolution: After being found guilty of high treason by the National Convention, Louis XVI was guillotined in Paris.

French and Indian War: French regulars, Canadien militia and Indigenous forces ambushed Rogers' Rangers forces in the Battle on Snowshoes.

King Edward II of England issued a royal charter confirming Adam de Brome's foundation of Oriel College, Oxford.

The Abbasid Caliphate crushed the Alid revolt when a rebel leader was mortally wounded in battle near Basra in present-day Iraq.