21 January 1651

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.

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.

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

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.

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.

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.

A fire at the Grand Kartal Hotel in the Kartalkaya ski resort in Bolu Province, Turkey, results in 78 people dead and 51 injured.

Over 400 cities across America and 160+ countries worldwide participate in a large-scale women's march, including in Portland, on Donald Trump's first full day as President of the United States.

Rojava conflict: The Jazira Canton declares its autonomy from the Syrian Arab Republic.

Anti-government demonstrations take place in Tirana, Albania. Four people die from gunshots, allegedly fired from armed police protecting the Prime Minister's office.

Israel withdraws from the Gaza Strip, officially ending a three-week war it had with Hamas. However, intermittent fire by both sides continues in the weeks to follow.

In Belmopan, Belize, the unrest over the government's new taxes erupts into riots.

NASA's MER-A (the Mars Rover Spirit) ceases communication with mission control. The problem lies in the management of its flash memory and is fixed remotely from Earth on February 6.

Ecuador: After the Ecuadorian Congress is seized by indigenous organizations, Col. Lucio Gutiérrez, Carlos Solorzano and Antonio Vargas depose President Jamil Mahuad. Gutierrez is later replaced by Gen. Carlos Mendoza, who resigns and allows Vice-President Gustavo Noboa to succeed Mahuad.

War on drugs: In one of the largest drug busts in American history, the United States Coast Guard intercepts a ship with over 4,300 kilograms (9,500 lb) of cocaine on board.

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