Events on December 21 37
Year 1361
The Battle of Linuesa is fought in the context of the Spanish Reconquista between the forces of the Emirate of Granada and the combined army of the Kingdom of Castile and of Jaén resulting in a Castilian victory.
Year 1598
Battle of Curalaba: The revolting Mapuche, led by cacique Pelentaru, inflict a major defeat on Spanish troops in southern Chile.
Year 1620
Plymouth Colony: William Bradford and the Mayflower Pilgrims land on what is now known as Plymouth Rock in Plymouth, Massachusetts.
Year 1826
American settlers in Nacogdoches, Mexican Texas, declare their independence, starting the Fredonian Rebellion.
Year 1832
Egyptian-Ottoman War: Egyptian forces decisively defeat Ottoman troops at the Battle of Konya.
Year 1844
The Rochdale Society of Equitable Pioneers commences business at its cooperative in Rochdale, England, starting the Cooperative movement.
Year 1861
Medal of Honor: Public Resolution 82, containing a provision for a Navy Medal of Valor, is signed into law by President Abraham Lincoln.
Year 1872
Challenger expedition: HMS Challenger, commanded by Captain George Nares, sails from Portsmouth, England.
Year 1879
World premiere of Henrik Ibsen's A Doll's House at the Royal Theatre in Copenhagen, Denmark.
Year 1883
The Royal Canadian Dragoons and The Royal Canadian Regiment, the first Permanent Force cavalry and infantry regiments of the Canadian Army, are formed.
Year 1907
The Chilean Army commits a massacre of at least 2,000 striking saltpeter miners in Iquique, Chile.
Year 1910
An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
Year 1913
Arthur Wynne's "word-cross", the first crossword puzzle, is published in the New York World.
Year 1923
United Kingdom and Nepal formally signed an agreement of friendship, called the Nepal-Britain Treaty of 1923, which superseded the Treaty of Sugauli signed in 1816.
Year 1937
Snow White and the Seven Dwarfs, the world's first full-length animated feature, premieres at the Carthay Circle Theatre.
Year 1941
World War II: A formal treaty of alliance between Thailand and Japan is signed in the presence of the Emerald Buddha in Wat Phra Kaew, Thailand.
Year 1946
An 8.1 Mw earthquake and subsequent tsunami in Nankaidō, Japan, kills over 1,300 people and destroys over 38,000 homes.
Year 1963
"Bloody Christmas" begins in Cyprus, ultimately resulting in the displacement of 25,000-30,000 Turkish Cypriots and destruction of more than 100 villages.
Year 1965
International Convention on the Elimination of All Forms of Racial Discrimination is adopted.
Year 1967
Louis Washkansky, the first man to undergo a heart transplant, dies in Cape Town, South Africa, having lived for 18 days after the transplant.
Year 1968
Apollo program: Apollo 8 is launched from the Kennedy Space Center, placing its crew on a lunar trajectory for the first visit to another celestial body by humans.
Year 1979
Lancaster House Agreement: An independence agreement for Rhodesia is signed in London by Lord Peter Carrington, Sir Ian Gilmour, Robert Mugabe, Joshua Nkomo, Bishop Abel Muzorewa and S.C. Mundawarara.
Year 1988
A bomb explodes on board Pan Am Flight 103 over Lockerbie, Dumfries and Galloway, Scotland, killing 270.
Year 1999
The Spanish Civil Guard intercepts a van loaded with 950 kg of explosives that ETA intended to use to blow up Torre Picasso in Madrid, Spain.
Year 2004
Iraq War: A suicide bomber killed 22 at the forward operating base next to the main U.S. military airfield at Mosul, Iraq, the single deadliest suicide attack on American soldiers.
Year 2012
2012 phenomenon: this day was regarded as the end-date of a 5,126-year-long cycle in the Mesoamerican Long Count calendar, leading to widespread expectations of cataclysmic events]] (which failed to happen).
Year ?
The Roman Senate declares Vespasian emperor of Rome, the last in the Year of the Four Emperors.