The Baltic states synchronize their electric power transmission infrastructure with the Continental Europe Synchronous Area (CESA), in objective to disconnect from the Russo-Belarussian agreement to use the IPS/UPS system.
Second impeachment trial of Donald Trump begins.
Salvadoran President Nayib Bukele has the army soldiers enter the Legislative Assembly to assist in pushing for the approval for a better government security plan, causing a brief political crisis.
Winter Olympics: Opening ceremony is performed in Pyeongchang County in South Korea.
Two passenger trains collide in the German town of Bad Aibling in the state of Bavaria. Twelve people die and 85 others are injured.
The Ehime Maru and USS Greeneville collision takes place, killing nine of the thirty-five people on board the Japanese fishery high-school training ship Ehime Maru, leaving the USS Greeneville (SSN-772) with US $2 million in repairs, at Pearl Harbor.
The Provisional Irish Republican Army declares the end to its 18-month ceasefire and explodes a large bomb in London's Canary Wharf, killing two people.
Copernicium is discovered by Sigurd Hofmann, Victor Ninov et al.
Dissolution of the Soviet Union: Voters in Lithuania vote for independence from the Soviet Union.
Halley's Comet last appeared in the inner Solar System.
Japan Air Lines Flight 350 crashes near Haneda Airport in an attempted pilot mass murder-suicide, killing 24 of the 174 people on board.
The Budd Company unveils its first SPV-2000 self-propelled railcar in Philadelphia, Pennsylvania.
Aeroflot Flight 3739, a Tupolev Tu-104, crashes during takeoff from Irkutsk Airport, killing 24.
The Soyuz 17 Soviet spacecraft returns to Earth.
The 6.5–6.7 Mw Sylmar earthquake hits the Greater Los Angeles Area with a maximum Mercalli intensity of XI (Extreme), killing 64 and injuring 2,000.
Apollo program: Apollo 14 returns to Earth after the third human Moon landing.
Satchel Paige becomes the first Negro league player to be voted into the USA's Baseball Hall of Fame.
Vietnam War: The United States Marine Corps sends a MIM-23 Hawk missile battalion to South Vietnam, the first American troops in-country without an official advisory or training mission.
The Beatles make their first appearance on The Ed Sullivan Show, performing before a record-setting audience of 73 million viewers across the United States.
The Beatles at the Cavern Club: Lunchtime – The Beatles perform under this name at The Cavern Club for the first time following their return to Liverpool from Hamburg.
The R-7 Semyorka, the first intercontinental ballistic missile, becomes operational at Plesetsk, USSR.
Korean War: The two-day Geochang massacre begins as a battalion of the 11th Division of the South Korean Army kills 719 unarmed citizens in Geochang, in the South Gyeongsang district of South Korea.
Second Red Scare: US Senator Joseph McCarthy accuses the United States Department of State of being filled with Communists.
World War II: Battle of the Atlantic: HMS Venturer sinks U-864 off the coast of Fedje, Norway, in a rare instance of submarine-to-submarine combat.
World War II: A force of Allied aircraft unsuccessfully attack a German destroyer in Førdefjorden, Norway.
World War II: Pacific War: Allied authorities declare Guadalcanal secure after Imperial Japan evacuates its remaining forces from the island, ending the Battle of Guadalcanal.
Year-round Daylight saving time (aka War Time) is reinstated in the United States as a wartime measure to help conserve energy resources.
World War II: Bombing of Genoa: The Cathedral of San Lorenzo in Genoa, Italy, is struck by a bomb which fails to detonate.
The Balkan Entente is formed between Greece, Romania, Yugoslavia, and Turkey.
Prohibition law is abolished in Finland after a national referendum, where 70% voted for a repeal of the law.
Members of the Việt Nam Quốc Dân Đảng assassinate the labor recruiter Bazin, prompting a crackdown by French colonial authorities.
Brazil becomes a member of the Berne Convention copyright treaty.
Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
A group of meteors is visible across much of the eastern seaboard of the Americas, leading astronomers to conclude the source had been a small, short-lived natural satellite of the Earth.
The Mud March is the first large procession organised by the National Union of Women's Suffrage Societies (NUWSS).
Russo-Japanese War: Battle of Port Arthur concludes.
William G. Morgan creates a game called Mintonette, which soon comes to be referred to as volleyball.
Verdi's last opera, Falstaff, premieres at La Scala, Milan.
US president Grover Cleveland signs a bill elevating the United States Department of Agriculture to a Cabinet-level agency.
US president Ulysses S. Grant signs a joint resolution of Congress establishing the U.S. Weather Bureau.
American Civil War: Jefferson Davis is elected the Provisional President of the Confederate States of America by the Provisional Confederate Congress at Montgomery, Alabama.
After no candidate receives a majority of electoral votes in the US presidential election of 1824, the United States House of Representatives elects John Quincy Adams as sixth President of the United States in a contingent election.
Haiti attacks the newly established Dominican Republic on the other side of the island of Hispaniola.
Rhode Island becomes the fourth US state to ratify the Articles of Confederation.
American Revolutionary War: The British Parliament declares Massachusetts in rebellion.
The Capture of Fort Rocher takes place during the Anglo-Spanish War.
Gregory XV becomes Pope, the last Pope elected by acclamation.
Bishop of Gloucester John Hooper is burned at the stake.
The first recorded race is held on Chester Racecourse, known as the Roodee.
A First Crusade army led by Bohemond of Taranto wins a major battle against the Seljuq emir Ridwan of Aleppo during the siege of Antioch.
Boleslaus III is restored to authority with armed support from Bolesław I the Brave of Poland.
Zeno is crowned as co-emperor of the Eastern Roman Empire.