| 143731 | December 21 | Death | 2009 – Christos Lambrakis, Greek journalist and businessman (b. 1934) |
| 143732 | December 21 | Death | 2010 – Enzo Bearzot, Italian footballer and manager (b. 1927) |
| 143733 | December 21 | Death | 2012 – Vivian Anderson, American baseball player (b. 1921) |
| 143734 | December 21 | Death | 2012 – Boyd Bartley, American baseball player (b. 1920) |
| 143735 | December 21 | Death | 2012 – Lee Dorman, American bass player (Iron Butterfly and Captain Beyond) (b. 1942) |
| 143736 | December 21 | Death | 2012 – David Lomon, English soldier (b. 1918) |
| 143737 | December 21 | Death | 2012 – Daphne Oxenford, English actress (b. 1919) |
| 143738 | December 21 | Death | 2013 – Eli Beeding, American captain and pilot (b. 1928) |
| 143739 | December 21 | Death | 2013 – Edgar Bronfman, Sr., Canadian-American businessman and philanthropist (b. 1929) |
| 143740 | December 21 | Death | 2013 – David Coleman, English sportscaster and game show host (b. 1926) |
| 143741 | December 21 | Death | 2013 – John Eisenhower, American historian, general, and diplomat, 45th United States Ambassador to Belgium (b. 1922) |
| 143742 | December 21 | Death | 2013 – Richard Hart, Jamaican-English historian, lawyer, and politician (b. 1917) |
| 143743 | December 21 | Death | 2013 – Rodolfo P. Hernández, American soldier, Medal of Honor recipient (b. 1931) |
| 143744 | December 21 | Death | 2014 – Jane Bown, English photographer (b. 1925) |
| 143745 | December 21 | Death | 2014 – Horacio Ferrer, Uruguayan poet and composer (b. 1922) |
| 143746 | December 21 | Death | 2014 – Udo Jürgens, Austrian-Swiss singer-songwriter and pianist (b. 1934) |
| 143747 | December 21 | Death | 2014 – Sitor Situmorang, Indonesian poet and author (b. 1923) |
| 143748 | December 21 | Death | 2014 – Frank Truitt, American basketball player and coach (b. 1925) |
| 143749 | December 21 | Death | 2014 – Billie Whitelaw, English actress (b. 1932) |
| 143750 | December 21 | Holiday and observance | Christian feast day:O OriensPetrus CanisiusThomas the Apostle (Anglicanism)December 21 (Eastern Orthodox liturgics) |
| 143751 | December 21 | Holiday and observance | Divalia, in honour of Angerona (Roman Empire) |
| 143752 | December 21 | Holiday and observance | Earliest date for the winter solstice in the Northern Hemisphere and the summer solstice in the Southern Hemisphere, and its related observances:Earliest date for Yule in the Northern Hemisphere, and Midsummer in the Southern Hemisphere. (Neopagan Wheel o |
| 143753 | December 21 | Holiday and observance | Forefathers' Day (Plymouth, Massachusetts) |
| 143754 | December 21 | Holiday and observance | São Tomé Day (São Tomé and Príncipe) |
| 143755 | December 21 | Holiday and observance | The first day of Pancha Ganapati, celebrated until December 25 (Saiva Siddhanta Church) |
| 143756 | December 22 | Event | 69 – Emperor Vitellius is captured and murdered at the Gemonian stairs in Rome. |
| 143757 | December 22 | Event | 880 – Luoyang, eastern capital of the Tang dynasty, is captured by rebel leader Huang Chao during the reign of Emperor Xizong. |
| 143758 | December 22 | Event | 1135 – Stephen of Blois becomes King of England |
| 143759 | December 22 | Event | 1216 – Pope Honorius III approves the Dominican Order through the papal bull of confirmation Religiosam vitam. |
| 143760 | December 22 | Event | 1622 – Bucaramanga, Colombia is founded. |