20202020 was heavily defined by the COVID-19 pandemic, which led to global social and economic disruption, mass cancellations and postponements of events, worldwide lockdowns and the largest economic recession since the Great Depression in the 1930s. Geospatial World also called 2020 "the worst year in terms of climate change" in part due to major climate disasters worldwide, including major bushfires in Australia and the western United States, as well as extreme tropical cyclone activity affecting large parts of North America.
1965January 1965 February 1965 January 14 – The Prime Minister of Northern Ireland and the Taoiseach of the Republic of Ireland meet for the first time in 43 years. January 20 Lyndon B. Johnson is sworn in for a full term as President of the United States. Indonesian President Sukarno announces the withdrawal of the Indonesian government from the United Nations. January 30 – The state funeral of Sir Winston Churchill takes place in London with the largest assembly of dignitaries in the world until the 2005 funeral of Pope John Paul II.
1971The year 1971 had three partial solar eclipses (February 25, July 22 and August 20) and two total lunar eclipses (February 10, and August 6). The world population increased by 2.1% this year, the highest increase in history. January 1971 January 2 – 66 people are killed and over 200 injured during a crush in Glasgow, Scotland. January 5 – The first ever One Day International cricket match is played between Australia and England at the Melbourne Cricket Ground.
1972Within the context of Coordinated Universal Time (UTC) it was the longest year ever, as two leap seconds were added during this 366-day year, an event which has not since been repeated. (If its start and end are defined using mean solar time [the legal time scale], its duration was 31622401.141 seconds of Terrestrial Time (or Ephemeris Time), which is slightly shorter than 1908). January 1972 January 1 – Kurt Waldheim becomes Secretary-General of the United Nations.
1948January 1948 January 1 The General Agreement on Tariffs and Trade (GATT) is inaugurated. The Constitution of New Jersey (later subject to amendment) goes into effect. The railways of Britain are nationalized, to form British Railways. January 4 – Burma gains its independence from the United Kingdom, becoming an independent republic, named the 'Union of Burma', with Sao Shwe Thaik as its first President and U Nu its first Prime Minister. January 5 – In the United States: Warner Brothers shows the first color newsreel (Tournament of Roses Parade and the Rose Bowl Game).
1940A calendar from 1940 according to the Gregorian calendar, factoring in the dates of Easter and related holidays, cannot be used again until the year 5280. Below, the events of World War II have the "WWII" prefix. January 1940 January 4 – WWII: Luftwaffe Colonel Hermann Göring assumes control of most war industries in Germany. January 6 – WWII: Winter War – General Semyon Timoshenko takes command of all Soviet forces. January 7 – WWII: Winter War: Battle of Raate Road – Outnumbered Finnish troops decisively defeat Soviet forces.
1919January 1919 January 1 The Czechoslovak Legions occupy much of the self-proclaimed "free city" of Pressburg (now Bratislava), enforcing its incorporation into the new republic of Czechoslovakia. HMY Iolaire sinks off the coast of the Hebrides; 201 people, mostly servicemen returning home to Lewis and Harris, are killed. January 2–22 – Russian Civil War: The Red Army's Caspian-Caucasian Front begins the Northern Caucasus Operation against the White Army, but fails to make progress.
1978January 1 – Air India Flight 855, a Boeing 747 passenger jet, crashes off the coast of Bombay, killing 213. January 5 – Bülent Ecevit, of CHP, forms the new government of Turkey (42nd government). January 6 – The Holy Crown of Hungary (also known as Stephen of Hungary Crown) is returned to Hungary from the United States, where it was held since World War II. January 10 – Pedro Joaquín Chamorro Cardenal, a critic of the Nicaraguan government, is assassinated; riots erupt against Somoza's government.
1937January 1937 January 1 – Anastasio Somoza García becomes President of Nicaragua. January 5 – Water levels begin to rise in the Ohio River in the United States, leading to the Ohio River flood of 1937, which continues into February, leaving 1 million people homeless and 385 people dead. January 15 – Spanish Civil War: Second Battle of the Corunna Road ends inconclusively. January 20 – Second inauguration of Franklin D. Roosevelt: Franklin D. Roosevelt is sworn in for a second term as President of the United States.
1962The year saw the Cuban Missile Crisis, which is often considered the closest the world came to a nuclear confrontation during the Cold War. January 1962 January 1 – Western Samoa becomes independent from New Zealand. January 3 – The office of Pope John XXIII announces the excommunication of Fidel Castro for preaching communism and interfering with Catholic churches in Cuba. January 8 – Harmelen train disaster: 93 die in the worst Dutch rail disaster. January 9 – Cuba and the Soviet Union sign a trade pact.