Historical timeline for February 9

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.

Copernicium is discovered by Sigurd Hofmann, Victor Ninov et al.

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.

Dissolution of the Soviet Union: Voters in Lithuania vote for independence from the Soviet Union.

Civil unrest broke out across Palestine.

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.

Apollo program: Apollo 14 returns to Earth after the third human Moon landing.

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.

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.