336 – First documentary sign of Christmas celebration in Rome.
350 – Vetranio meets Constantius II at Naissus (Serbia) and is forced to abdicate his imperial title. Constantius allows him to live as a private citizen on a state pension.
1724 – J. S. Bach leads the first performance of Gelobet seist du, Jesu Christ, BWV 91, in Leipzig, based on Luther's 1524 Christmas hymn.
1758 – Halley's Comet is sighted by Johann Georg Palitzsch, confirming Edmund Halley's prediction of its passage. This was the first passage of a comet predicted ahead of time.
1766 – in Colonial Chile launch a series of surprise attacks against the Spanish starting the Mapuche uprising of 1766.
1776 – American Revolutionary War: General George Washington and the Continental Army cross the Delaware River at night to attack Hessian forces serving Great Britain at Trenton, New Jersey, the next day.
1793 – Northwest Indian War: General Anthony Wayne and a 300 man detachment identify the site of St. Clair's 1791 defeat by the large number of unburied human remains at modern Fort Recovery, Ohio.
1915 – The National Protection War breaks out against the Empire of China, as military leaders Cai E and Tang Jiyao proclaim the independence of Yunnan and begin a campaign to restore the Republic.
Ke-wen Wang (1998). 9780815307204, Taylor & Francis. . ISBN 9780815307204
1927 – B. R. Ambedkar and his followers burn copies of the Manusmriti in Mahad, Maharashtra, to protest its treatment of Dalit people.
1932 – A magnitude 7.6 earthquake in Gansu, China kills 275 people.
1941 – Admiral Chester W. Nimitz, appointed commander of the U.S. Pacific Fleet on December 17,
Stanley Weintraub (2025). 9780306820618, Da Capo Press. . ISBN 9780306820618
1941 – World War II: Battle of Hong Kong ends, beginning the Japanese occupation of Hong Kong.
1941 – Admiral Émile Muselier seizes the archipelago of Saint Pierre and Miquelon, which become the first part of France to be liberated by the Free French Forces.
1946 – The first European self-sustaining nuclear chain reaction is initiated within the Soviet Union's F-1 nuclear reactor.
1950 – The Stone of Scone, traditional coronation stone of British Monarch, is taken from Westminster Abbey by Scottish nationalist students. It later turns up in Scotland on April 11, 1951.
1951 – A bomb explodes at the home of Harry T. Moore and Harriette Moore, early leaders of the Civil Rights Movement, killing Harry instantly and fatally wounding Harriette.
1962 – The Soviet Union conducts its final above-ground nuclear weapon test, in anticipation of the 1963 Partial Nuclear Test Ban Treaty.
1963 – Turkish Cypriot Bayrak Radio begins transmitting in Cyprus after Turkish Cypriots are forcibly excluded from Cyprus Broadcasting Corporation.
1968 – Apollo program: Apollo 8 performs the first successful Trans-Earth injection (TEI) maneuver, sending the crew and spacecraft on a trajectory back to Earth from Lunar orbit.
1968 – Kilvenmani massacre: Forty-four (untouchables) are burnt to death in Kizhavenmani village, Tamil Nadu, a retaliation for a campaign for higher wages by Dalit laborers.
1976 – EgyptAir Flight 864, a Boeing 707-366C, crashes on approach to Don Mueang International Airport, killing 71 people.
1986 – Iraqi Airways Flight 163, a Boeing 737-270C, is hijacked and crashes in Arar, Saudi Arabia, killing 63 people.
1989 – Romanian Revolution: Deposed President of Romania Nicolae Ceaușescu and his wife, Elena, are condemned to death and executed after a summary trial.
1991 – Mikhail Gorbachev resigns as President of the Soviet Union (the union itself is dissolved the next day). Ukraine's referendum is finalized and Ukraine officially leaves the Soviet Union.
William Taubman (2025). 9781471147968, Simon and Schuster. . ISBN 9781471147968
1996 – The body of American child beauty queen JonBenét Ramsey was found in her family's Boulder, Colorado, home. Her murder remains unsolved.
1999 – Cubana de Aviación Flight 310, a Yakovlev Yak-42, crashes near Bejuma, Carabobo State, Venezuela, killing 22 people.
2003 – UTA Flight 141, a Boeing 727-223, crashes at the Cotonou Airport in Benin, killing 141 people.
2003 – The ill-fated Beagle 2 probe, released from the Mars Express spacecraft on December 19, stops transmitting shortly before its scheduled landing.
2004 – The Cassini Orbiter releases Huygens probe which successfully landed on Saturn's moon Titan on January 14, 2005.
2012 – An Antonov An-72 plane crashes close to the city of Shymkent, killing 27 people.
2012 – Air Bagan Flight 011, a Fokker 100, crashes on approach to Heho Airport in Heho, Myanmar, killing two people.
2016 – A Russian Defence Ministry Tupolev Tu-154 carrying members of the Alexandrov Ensemble crashes into the Black Sea shortly after takeoff, killing all 92 people on board.
2019 – Twenty people are killed and thousands are left homeless by Typhoon Phanfone in the Philippines.
2020 – An explosion in Nashville, Tennessee, occurs, leaving three civilians in the hospital.
2021 – The James Webb Space Telescope is launched.
2024 – Azerbaijan Airlines Flight 8243 crashes in Aktau, Kazakhstan, killing 38 of its occupants.
1771 – Dorothy Wordsworth, English diarist and poet (died 1855)
1776 – Sydney, Lady Morgan, Irish author and poet (died 1859)
1810 – L. L. Langstroth, American apiarist, clergyman and teacher (died 1895)
1821 – Clara Barton, American nurse and humanitarian, founder of the American Red Cross (died 1912)
1825 – Stephen F. Chadwick, American lawyer and politician, 5th Governor of Oregon (died 1895)
1829 – Patrick Gilmore, Irish-American composer and bandleader (died 1892)
1856 – Pud Galvin, American baseball player and manager (died 1902)
1861 – Francis Henry Buzzacott, American hunter, explorer and army scout famous for writing Buzzacott's Masterpiece (died 1947) Buzzacott's Masterpiece
1861 – Madan Mohan Malaviya, Indian educator, lawyer, and politician, President of the Indian National Congress (died 1946)
1865 – Evangeline Booth, English 4th General of The Salvation Army (died 1950)
1869 – Charles Finger, English-American journalist and author (died 1941)
1872 – Helena Rubinstein, Polish-American businesswoman and philanthropist (died 1965)
1873 – Otto Frederick Hunziker, Swiss-American agriculturalist and educator (died 1959)
1874 – Lina Cavalieri, Italian soprano and actress (died 1944)
1875 – Francis Aveling, Canadian psychologist and priest (died 1941)