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December 21 is the 355th day of the year (356th in leap years) in the Gregorian calendar; 10 days remain until the end of the year.

In the Northern Hemisphere, December 21 is often the shortest day of the year and is sometimes regarded as the first day of winter. In the Southern Hemisphere, December 21 is often the longest day of the year and occurs during the southern summer.

Events

• AD 69 – The Roman Senate declares Vespasian emperor of Rome, the last in the Year of the Four Emperors.
• 1124 – Pope Honorius II is consecrated, having been elected after the controversial dethroning of Pope Celestine II.
• 1140 – Conrad III of Germany besieges Weinsberg.
• 1237 – The city of Ryazan is sacked by the Mongol army of Batu Khan.
• 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.
• 1598 – Battle of Curalaba: The revolting Mapuche, led by cacique Pelentaru, inflict a major defeat on Spanish troops in southern Chile.
• 1620 – Plymouth Colony: William Bradford and the Mayflower Pilgrims land on what is now known as Plymouth Rock in Plymouth, Massachusetts.
• 1826 – American settlers in Nacogdoches, Mexican Texas, declare their independence, starting the Fredonian Rebellion.
• 1832 – Egyptian–Ottoman War: Egyptian forces decisively defeat Ottoman troops at the Battle of Konya.
• 1844 – The Rochdale Society of Equitable Pioneers commences business at its cooperative in Rochdale, England, starting the Cooperative movement.
• 1861 – Medal of Honor: Public Resolution 82, containing a provision for a Navy Medal of Valor, is signed into law by President Abraham Lincoln.
• 1872 – Challenger expedition: HMS Challenger, commanded by Captain George Nares, sails from Portsmouth, England.
• 1879 – World premiere of Henrik Ibsen's A Doll's House at the Royal Theatre in Copenhagen, Denmark.
• 1883 – The Royal Canadian Dragoons and The Royal Canadian Regiment, the first Permanent Force cavalry and infantry regiments of the Canadian Army, are formed.
• 1907 – The Chilean Army commits a massacre of at least 2,000 striking saltpeter miners in Iquique, Chile.
• 1910 – An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
• 1913 – Arthur Wynne's "word-cross", the first crossword puzzle, is published in the New York World.
• 1919 – American anarchist Emma Goldman is deported to Russia.
• 1923 – United Kingdom and Nepal formally sign an agreement of friendship, called the Nepal–Britain Treaty of 1923, which superseded the Treaty of Sugauli signed in 1816.
• 1936 – First flight of the Junkers Ju 88 multi-role combat aircraft.
• 1937 – Snow White and the Seven Dwarfs, the world's first full-length animated feature, premieres at the Carthay Circle Theatre.
• 1941 – World War II: A Thai-Japanese Pact of Alliance is signed.
• 1946 – An 8.1 M_w earthquake and subsequent tsunami in Nankaidō, Japan, kills over 1,300 people and destroys over 38,000 homes.
• 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.
• 1965 – International Convention on the Elimination of All Forms of Racial Discrimination is adopted.
• 1967 – Louis Washkansky, the first man to undergo a human-to-human heart transplant, dies in Cape Town, South Africa, having lived for 18 days after the transplant.
• 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.
• 1970 – First flight of F-14 multi-role combat aircraft.
• 1973 – The Geneva Conference on the Arab–Israeli conflict opens.
• 1979 – Lancaster House Agreement: An independence agreement for Rhodesia is signed in London by Lord Carrington, Sir Ian Gilmour, Robert Mugabe, Joshua Nkomo, Bishop Abel Muzorewa and S.C. Mundawarara.
• 1988 – A bomb explodes on board Pan Am Flight 103 over Lockerbie, Dumfries and Galloway, Scotland, killing 270. This is to date the deadliest air disaster to occur on British soil.
• 1988 – The first flight of Antonov An-225 Mriya, the largest aircraft in the world.
• 1992 – A Dutch DC-10, flight Martinair MP 495, crashes at Faro Airport, killing 56.
• 1995 – The city of Bethlehem passes from Israeli to Palestinian control.
• 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.
• 1999 – Cubana de Aviación Flight 1216 overshoots the runway at La Aurora International Airport, killing 18.
• 2004 – Iraq War: A suicide bomber kills 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.

Births

• 968 – Minamoto no Yorinobu, Japanese samurai (d. 1048)
• 1401 – Masaccio, Italian painter (d. 1428)
• 1468 – William Conyers, 1st Baron Conyers, English baron (d. 1524)
• 1505 – Thomas Wriothesley, 1st Earl of Southampton, English politician (d. 1550)
• 1538 – Luigi d'Este, Catholic cardinal (d. 1586)
• 1542 – Thomas Allen, English mathematician and astrologer (d. 1632)
• 1550 – Man Singh I, Mughal noble (d. 1614)
• 1596 – Peter Mohyla, Ruthenian Orthodox metropolitan and saint (d. 1646)
• 1603 – Roger Williams, English minister, theologian, and politician, 9th President of the Colony of Rhode Island (d. 1684)
• 1615 – Benedict Arnold, Rhode Island colonial governor (d. 1678)
• 1672 – Benjamin Schmolck, German pastor and composer (d. 1737)
• 1714 – John Bradstreet, Canadian-English general (d. 1774)
• 1728 – Hermann Raupach, German harpsichord player and composer (d. 1778)
• 1778 – Anders Sandøe Ørsted, Danish jurist and politician, 3rd Prime Minister of Denmark (d. 1860)
• 1795 – Jack Russell, English priest, hunter, and dog breeder (d. 1883)
• 1795 – Leopold von Ranke, German historian, author, and academic (d. 1886)
• 1803 – Achille Vianelli, Italian painter and academic (d. 1894)
• 1804 – Benjamin Disraeli, English lawyer and politician, Prime Minister of the United Kingdom (d. 1881)
• 1805 – Thomas Graham, Scottish chemist and academic (d. 1869)
• 1811 – Archibald Tait, Scottish-English archbishop (d. 1882)
• 1815 – Thomas Couture, French painter and educator (d. 1879)
• 1820 – William H. Osborn, American businessman (d. 1894)
• 1830 – Bartolomé Masó, Cuban soldier and politician (d. 1907)
• 1832 – John H. Ketcham, American general and politician (d. 1906)
• 1840 – Namık Kemal, Turkish journalist, playwright, and activist (d. 1888)
• 1843 – Thomas Bracken, Irish-New Zealander journalist, poet, and politician (d. 1898)
• 1850 – Zdeněk Fibich, Czech composer and poet (d. 1900)
• 1851 – Thomas Chipman McRae, American lawyer and politician, 26th Governor of Arkansas (d. 1929)
• 1857 – Joseph Carruthers, Australian politician, 16th Premier of New South Wales (d. 1932)
• 1859 – Gustave Kahn, French poet and critic (d. 1936)
• 1866 – Maud Gonne, Irish nationalist and political activist (d. 1953)
• 1868 – George W. Fuller, American chemist and engineer (d. 1934)
• 1872 – Trevor Kincaid, Canadian-American zoologist and academic (d. 1970)
• 1872 – Lorenzo Perosi, Italian priest and composer (d. 1956)
• 1872 – Albert Payson Terhune, American journalist and author (d. 1942)
• 1876 – Jack Lang, Australian lawyer and politician, 23rd Premier of New South Wales (d. 1975)
• 1877 – Jaan Sarv, Estonian mathematician and scholar (d. 1954)
• 1878 – Jan Łukasiewicz, Polish-Irish mathematician and philosopher (d. 1956)
• 1884 – María Cadilla, Puerto Rican writer, educator, women's rights activist (d. 1951)
• 1885 – Frank Patrick, Canadian ice hockey player and coach (d. 1960)
• 1888 – Jean Bouin, French runner and rugby player (d. 1914)
• 1889 – Sewall Wright, American geneticist and biologist (d. 1988)
• 1890 – Hermann Joseph Muller, American geneticist and biologist, Nobel Prize laureate (d. 1967)
• 1891 – John William McCormack, American lawyer and politician, 53rd Speaker of the United States House of Representatives (d. 1980)
• 1892 – Walter Hagen, American golfer (d. 1969)
• 1892 – Rebecca West, English journalist and author (d. 1983)
• 1896 – Konstantin Rokossovsky, Marshal of the Soviet Union during World War II (d. 1968)
• 1900 – Luis Arturo González López, Guatemalan supreme court judge and briefly acting president (d. 1965)
• 1905 – Anthony Powell, English author (d. 2000)
• 1905 – Käte Fenchel, German mathematician (d. 1983)
• 1909 – Seichō Matsumoto, Japanese journalist and author (d. 1992)
• 1911 – Josh Gibson, American baseball player (d. 1947)
• 1913 – Arnold Friberg, American illustrator and painter (d. 2010)
• 1914 – Frank Fenner, Australian microbiologist and virologist (d. 2010)
• 1915 – Werner von Trapp, Austrian-American singer (d. 2007)
• 1917 – Heinrich Böll, German novelist and short story writer, Nobel Prize laureate (d. 1985)
• 1918 – Donald Regan, American colonel and politician, 11th White House Chief of Staff (d. 2003)
• 1918 – Kurt Waldheim, Austrian colonel, war criminal, and politician; 9th President of Austria (d. 2007)
• 1919 – Doug Young, American voice actor (d. 2018)
• 1920 – Alicia Alonso, Cuban ballerina and choreographer, founded the Cuban National Ballet (d. 2019)
• 1920 – Adele Goldstine, American computer programmer (d. 1964)
• 1922 – Itubwa Amram, Nauruan pastor and politician (d. 1989)
• 1922 – Paul Winchell, American actor, voice artist, and ventriloquist (d. 2005)
• 1922 – Cécile DeWitt-Morette, French mathematician and physicist (d. 2017)
• 1923 – Wataru Misaka, American basketball player (d. 2019)
• 1926 – Arnošt Lustig, Czech author and playwright (d. 2011)
• 1926 – Joe Paterno, American football player and coach (d. 2012)
• 1932 – U. R. Ananthamurthy, Indian author, poet, and critic (d. 2014)
• 1932 – Edward Hoagland, American author and critic
• 1933 – Jackie Hendriks, Jamaican cricketer
• 1933 – Robert Worcester, American businessman and academic, founded MORI
• 1934 – Giuseppina Leone, Italian sprinter
• 1934 – Hanif Mohammad, Pakistani cricketer (d. 2016)
• 1935 – John G. Avildsen, American director, producer, and cinematographer (d. 2017)
• 1935 – Lorenzo Bandini, Italian racing driver (d. 1967)
• 1935 – Phil Donahue, American talk show host and producer
• 1935 – Edward Schreyer, Canadian academic and politician, 22nd Governor General of Canada
• 1935 – Stela Popescu, Romanian actress (d. 2017)
• 1937 – Jane Fonda, American actress, producer, and activist
• 1939 – Lloyd Axworthy, Canadian academic and politician, 2nd Canadian Minister of Foreign Affairs
• 1939 – Wafic Saïd, Syrian-Saudi Arabian financier, businessman and philanthropist
• 1940 – Frank Zappa, American singer-songwriter, guitarist, and producer (d. 1993)
• 1942 – Hu Jintao, Chinese engineer and politician, 5th Paramount leader of China
• 1943 – Albert Lee, English guitarist and songwriter
• 1943 – Walter Spanghero, French rugby player
• 1944 – Michael Tilson Thomas, American pianist, composer, and conductor
• 1944 – Zheng Xiaoyu, Chinese diplomat (d. 2007)
• 1945 – Doug Walters, Australian cricketer
• 1946 – Roy Karch, American director, producer, and screenwriter
• 1946 – Carl Wilson, American singer-songwriter and guitarist (d. 1998)
• 1947 – Paco de Lucía, Spanish guitarist, songwriter, and producer (d. 2014)
• 1948 – Barry Gordon, American actor and voice artist; longest-serving president of the Screen Actors Guild (1988–95)
• 1948 – Samuel L. Jackson, American actor and producer
• 1948 – Dave Kingman, American baseball player
• 1949 – Thomas Sankara, Burkinabé captain and politician, 5th President of Burkina Faso (d. 1987)
• 1949 – Nikolaos Sifounakis, Greek lawyer and politician
• 1950 – Jeffrey Katzenberg, American screenwriter and producer, co-founded DreamWorks Animation
• 1950 – Lillebjørn Nilsen, Norwegian singer-songwriter and guitarist
• 1950 – Max Maven, American magician and mentalist
• 1951 – Steve Perryman, English footballer and manager
• 1952 – Joaquín Andújar, Dominican baseball player (d. 2015)
• 1952 – Steve Furniss, American swimmer
• 1953 – András Schiff, Hungarian-English pianist and conductor
• 1953 – Betty Wright, American singer-songwriter (d. 2020)
• 1954 – Chris Evert, American tennis player and coach
• 1955 – Jane Kaczmarek, American actress
• 1955 – Kazuyuki Sekiguchi, Japanese singer-songwriter and bass player
• 1956 – Dave Laut, American shot putter (d. 2009)
• 1957 – Ray Romano, American actor, producer, and screenwriter
• 1958 – Tamara Bykova, Russian high jumper
• 1959 – Florence Griffith Joyner, American sprinter and actress (d. 1998)
• 1959 – Krishnamachari Srikkanth, Indian cricketer
• 1960 – Sherry Rehman, Pakistani journalist, politician, and diplomat, 25th Pakistan Ambassador to the United States
• 1961 – Ryuji Sasai, Japanese bass player and composer
• 1963 – Govinda, Indian actor, singer, and politician
• 1964 – Joe Kocur, Canadian ice hockey player and coach
• 1964 – Kunihiko Ikuhara, Japanese director and illustrator
• 1965 – Glenn Coleman, Australian rugby league player
• 1965 – Andy Dick, American comedian, actor, producer, and screenwriter
• 1965 – Anke Engelke, Canadian-German actress, director, and screenwriter
• 1966 – William Ruto, Kenyan politician, Deputy President of Kenya
• 1966 – Kiefer Sutherland, British-Canadian actor, director, and producer
• 1967 – Terry Mills, American basketball player and coach
• 1967 – Mikheil Saakashvili, Georgian lawyer and politician, 3rd President of Georgia
• 1969 – Julie Delpy, French model, actress, director, and screenwriter
• 1969 – Mihails Zemļinskis, Latvian footballer, coach, and manager
• 1971 – Matthieu Chedid, French singer-songwriter and guitarist
• 1972 – Y. S. Jaganmohan Reddy, Indian Politician, 17th Chief Minister of Andhra Pradesh
• 1973 – Irakli Alasania, Georgian colonel and politician, Georgian Minister of Defense
• 1973 – Matías Almeyda, Argentine footballer and manager
• 1974 – Karrie Webb, Australian golfer
• 1975 – Paloma Herrera, Argentinian ballerina
• 1977 – Emmanuel Macron, President of France
• 1977 – Leon MacDonald, New Zealand rugby player
• 1978 – Emiliano Brembilla, Italian swimmer
• 1978 – Charles Dera, American pornographic actor, dancer, model, and mixed martial arts fighter
• 1978 – Shaun Morgan, South African musician, singer, and guitarist
• 1979 – Steve Montador, Canadian ice hockey player (d. 2015)
• 1981 – Cristian Zaccardo, Italian footballer
• 1982 – Philip Humber, American baseball player
• 1983 – Steven Yeun, American actor
• 1985 – Tom Sturridge, English actor
• 1988 – Perri Shakes-Drayton, English sprinter and hurdler
• 1989 – Mark Ingram Jr., American football player
• 1989 – Tamannaah, South Indian actress
• 1991 – Riccardo Saponara, Italian footballer
• 1995 – Ronnie Bassett Jr., American race car driver
• 1995 – Kelly Smith, English rugby union player

Deaths

• AD 72 – Thomas the Apostle, Roman martyr and saint (b. 1 AD)
• 882 – Hincmar, French archbishop and historian (b. 806)
• 956 – Sun Sheng, Chinese chancellor
• 975 – Al-Mu'izz, Fatimid caliph (b. 932)
• 1001 – Hugh of Tuscany, Italian margrave (b. 950)
• 1215 – Ali ibn Muhammad ibn al-Walid, Dāʿī al-Muṭlaq of Tayyibi Isma'ilism (b. c. 1128)
• 1308 – Henry I, Landgrave of Hesse (b. 1244)
• 1338 – Thomas Hemenhale, bishop of Worcester
• 1362 – Constantine III, king of Armenia (b. 1313)
• 1375 – Giovanni Boccaccio, Italian author and poet (b. 1313)
• 1504 – Berthold von Henneberg, German archbishop (b. 1442)
• 1536 – John Seymour, English courtier (b. 1474)
• 1549 – Marguerite de Navarre, queen of Henry II of Navarre (b. 1492)
• 1581 – Jean de la Cassière, 51st Grandmaster of the Knights Hospitaller (b. 1502)
• 1597 – Peter Canisius, Dutch priest and saint (b. 1521)
• 1608 – William Davison, secretary to Queen Elizabeth I of England (b. c. 1541)
• 1610 – Catherine Vasa, Swedish princess (b. 1539)
• 1701 – Sir Hugh Paterson, Baronet of Bannockburn (b. 1659)
• 1807 – John Newton, English soldier and minister (b. 1725)
• 1824 – James Parkinson, English physician and paleontologist (b. 1755)
• 1869 – Friedrich Ernst Scheller, German jurist and politician (b. 1791)
• 1873 – Francis Garnier, French admiral and explorer (b. 1839)
• 1889 – Friedrich August von Quenstedt, German geologist and palaeontologist (b. 1809)
• 1920 – Mohammed Abdullah Hassan, Somalian general, founded the Dervish movement (b. 1856)
• 1929 – I. L. Patterson, American politician, 18th Governor of Oregon (b. 1859)
• 1933 – Knud Rasmussen, Greenlandic anthropologist and explorer (b. 1879)
• 1935 – Ted Birnie, English footballer and manager (b. 1878)
• 1935 – Kurt Tucholsky, German-Swedish journalist and author (b. 1890)
• 1937 – Violette Neatley Anderson, American judge (b. 1882)
• 1937 – Ted Healy, American comedian and actor (b. 1896)
• 1937 – Frank B. Kellogg, American lawyer and politician, 45th United States Secretary of State, Nobel Prize laureate (b. 1856)
• 1940 – F. Scott Fitzgerald, American novelist and short story writer (b. 1896)
• 1945 – George S. Patton, American general (b. 1885)
• 1948 – Władysław Witwicki, Polish psychologist, philosopher, translator, historian (of philosophy and art) and artist (b. 1878)
• 1952 – Kenneth Edwards, American golfer (b. 1886)
• 1953 – Kaarlo Koskelo, Finnish-American wrestler and businessman (b. 1888)
• 1957 – Eric Coates, English-American viola player and composer (b. 1886)
• 1958 – H.B. Warner, English actor (b. 1875)
• 1958 – Lion Feuchtwanger, German-American author and playwright (b. 1884)
• 1959 – Rosanjin, Japanese calligrapher, engraver, and painter (b. 1883)
• 1963 – Jack Hobbs, English cricketer and journalist (b. 1882)
• 1964 – Carl Van Vechten, American author and photographer (b. 1880)
• 1965 – Claude Champagne, Canadian violinist, pianist, and composer (b. 1891)
• 1968 – Vittorio Pozzo, Italian footballer, coach, and manager (b. 1886)
• 1974 – Richard Long, American actor and director (b. 1927)
• 1982 – Abu Al-Asar Hafeez Jullundhri, Pakistani poet and composer (b. 1900)
• 1983 – Paul de Man, Belgian-born philosopher, literary critic and theorist (b. 1919)
• 1988 – Nikolaas Tinbergen, Dutch-English ethologist and ornithologist, Nobel Prize laureate (b. 1907)
• 1992 – Stella Adler, American actress and educator (b. 1901)
• 1992 – Albert King, American singer-songwriter, guitarist, and producer (b. 1924)
• 1992 – Nathan Milstein, Russian-American violinist and composer (b. 1903)
• 1998 – Ernst-Günther Schenck, German colonel and physician (b. 1904)
• 2004 – Autar Singh Paintal, Indian physiologist and neurologist (b. 1925)
• 2006 – Saparmurat Niyazov, Turkmen engineer and politician, 1st President of Turkmenistan (b. 1940)
• 2009 – Edwin G. Krebs, American biochemist and academic, Nobel Prize laureate (b. 1918)
• 2009 – Christos Lambrakis, Greek journalist and businessman (b. 1934)
• 2010 – Enzo Bearzot, Italian footballer and manager (b. 1927)
• 2013 – Edgar Bronfman, Sr., Canadian-American businessman and philanthropist (b. 1929)
• 2013 – John Eisenhower, American historian, general, and diplomat, 45th United States Ambassador to Belgium (b. 1922)
• 2014 – Udo Jürgens, Austrian-Swiss singer-songwriter and pianist (b. 1934)
• 2014 – Sitor Situmorang, Indonesian poet and author (b. 1923)
• 2014 – Billie Whitelaw, English actress (b. 1932)
• 2017 – Bruce McCandless II, US astronaut who conducted the first untethered spacewalk (b. 1937)

Holidays and observances

• Armed Forces Day (Philippines)
• Christian feast day:
  • O Oriens
  • Peter Canisius
  • Thomas the Apostle (Anglicanism)
  • December 21 (Eastern Orthodox liturgics)
• Earliest usual date for the winter solstice in the Northern Hemisphere and the summer solstice in the Southern Hemisphere, and its related observances:
  • Blue Christmas (some modern American liberal Protestant groups)
  • Dongzhi Festival (Asia)
  • Sanghamitta Day (Theravada Buddhism)
  • Yule in the Northern Hemisphere (Neopagan Wheel of the Year)
  • Ziemassvētki (ancient Latvia)
• Forefathers' Day (Plymouth, Massachusetts)
• São Tomé Day (São Tomé and Príncipe)
• The first day of Pancha Ganapati, celebrated until December 25 (Saiva Siddhanta Church)

References

1. Sandler, Stanley (2002). Ground Warfare: An International Encyclopedia. ABC-CLIO. p. 923. ISBN 978-1-57607-344-5.
2. Levillain, Philippe (2002). The Papacy: Gaius-Proxies. Psychology Press. p. 732. ISBN 978-0-415-92230-2.
3. Rachewiltz, Igor de; Wang, May (1993). In the Service of the Khan: Eminent Personalities of the Early Mongol-Yüan Period (1200-1300). Otto Harrassowitz Verlag. p. 23. ISBN 978-3-447-03339-8.
4. Hoehn, Marek (2007). "Una visión comparativa sobre la huelga de Santa María de Iquique y el legado de los movimientos obreros de la época". In Vásquez, David (ed.). La Masacre de la Escuela Santa María de Iquique: Mirada Histórica desde la Cámara de Diputados (in Spanish). Biblioteca del Congreso Nacional de Chile. p. 110. ISBN 978-956-7629-04-6. Ya es sabido que dicha huelga culminó en la masacre de más de dos mil obreros en la escuela Santa María
5. Ranter, Harro. "ASN Aircraft accident McDonnell Douglas DC-10-30 F-GTDI Guatemala City-La Aurora Airport (GUA)". aviation-safety.net. Retrieved 2019-09-20.
6. Bruce Cole (1980). Masaccio and the art of early Renaissance Florence. Indiana University Press. p. 108. ISBN 978-0-253-12298-8.
7. Ann Hoffmann (1977). Lives of the Tudor Age, 1485-1603. Barnes & Noble Books. p. 476. ISBN 978-0-06-494331-4.
8. Rajiva Nain Prasad (1966). Raja Mān Singh of Amber. World Press. p. 19.
9. The American Quarterly Register. The Society. 1841. p. 276.
10. Andreas D Boldt (29 March 2019). Leopold Von Ranke: A Biography. Taylor & Francis. p. 22. ISBN 978-1-351-04272-7.
11. Jonathan Parry (23 April 2007). Benjamin Disraeli. OUP Oxford. p. 1. ISBN 978-0-19-164751-2.
12. Cardozo, Nancy (2000). Maud Gonne. New York: Amsterdam Books. p. 12. ISBN 978-0-9415-3395-9.
13. Sicherman, Barbara; Hurd Green, Carol (1983). Notable American Women: The Modern Period. Cambridge MA: Belknap. p. 129. ISBN 978-0-6746-2733-8.
14. Grinstein, Louise S.; Campbell, Paul J. (1987). Women of Mathematics : a Biobibliographic Sourcebook. New York: Greenwood Press. p. 30. ISBN 978-0-3132-4849-8.
15. Henderson, Harry (2003). A to Z of Computer Scientists. New York: Facts on File. p. 99. ISBN 978-0-8160-4531-0.
16. Oakes, Elizabeth H. (2007). Encyclopedia of World Scientists. New York: Facts on File. p. 179. ISBN 978-0-8160-6158-7.
17. Goldstein, Richard (November 21, 2019). "Wat Misaka, First Nonwhite in Modern Pro Basketball, Dies at 95". The New York Times. Retrieved November 22, 2019.
18. Maxine Block; Anna Herthe Rothe; Marjorie Dent Candee; Charles Moritz (2002). Current Biography Yearbook. H. W. Wilson Company. p. 542.
19. B. Turner (12 January 2017). The Statesman's Yearbook 2008: The Politics, Cultures and Economies of the World. Springer. p. 502. ISBN 978-1-349-74024-6.
20. Sophie Pedder (21 June 2018). Revolution Française: Emmanuel Macron and the quest to reinvent a nation. Bloomsbury Publishing. p. 54. ISBN 978-1-4729-4861-8.
21. "Ronnie Bassett, Jr". racing-reference.info. Retrieved 2019-11-17.
22. "Kelly Smith". www.ultimaterugby.com. Retrieved 24 June 2020.
23. Poonawala, Ismail K. (2009). "ʿAlī b. al-Walīd". In Fleet, Kate; Krämer, Gudrun; Matringe, Denis; Nawas, John; Rowson, Everett (eds.). Encyclopaedia of Islam (3rd ed.). Brill Online. doi:10.1163/1573-3912_ei3_COM_22932. ISSN 1873-9830.
24. Smith, Jessie Carney; Phelps, Shirelle (1996). Notable Black American Women. VNR AG. p. 11. ISBN 978-0-8103-9177-2.
25. Nowicki, Andrzej (1982). Witwicki (in Polish). Warszawa: Wiedza Powszechna. p. 120. ISBN 83-214-0301-8.
26. Coveney, Michael (22 December 2014). "Billie Whitelaw obituary". The Guardian. Retrieved 24 June 2020.

External links

• BBC: On This Day
• The New York Times: On This Day
• Historical Events on December 21
• Today in Canadian History

• Days of the year
• December