| 144451 | December 23 | Death | 2013 – Chryssa, Greek-American sculptor (b. 1933) |
| 144452 | December 23 | Death | 2013 – Mikhail Kalashnikov, Russian general and weapons designer, designed the AK-47 rifle (b. 1919) |
| 144453 | December 23 | Death | 2013 – Yusef Lateef, American saxophonist, composer, and educator (b. 1920) |
| 144454 | December 23 | Death | 2013 – Ricky Lawson, American drummer and composer (Yellowjackets) (b. 1954) |
| 144455 | December 23 | Death | 2013 – José Ortiz, Spanish illustrator (b. 1932) |
| 144456 | December 23 | Death | 2013 – Vito Rizzuto, Italian-Canadian mob boss (b. 1945) |
| 144457 | December 23 | Death | 2013 – G. S. Shivarudrappa, Indian poet and educator (b. 1926) |
| 144458 | December 23 | Death | 2013 – Robert W. Wilson American hedge fund manager, philanthropist and art collector (b. 1928) |
| 144459 | December 23 | Death | 2014 – K. Balachander, Indian actor, director, producer, and screenwriter (b. 1930) |
| 144460 | December 23 | Death | 2014 – Jo Jo Benson, American singer (b. 1938) |
| 144461 | December 23 | Death | 2014 – Mike Elliott, English comedian and actor (b. 1946) |
| 144462 | December 23 | Death | 2014 – Edward Greenspan, Canadian lawyer and author (b. 1944) |
| 144463 | December 23 | Death | 2014 – Robert V. Hogg, American statistician and academic (b. 1924) |
| 144464 | December 23 | Death | 2014 – Jeremy Lloyd, English actor and screenwriter (b. 1930) |
| 144465 | December 23 | Holiday and observance | Birthday of the Queen Silvia, an official flag day (Sweden) |
| 144466 | December 23 | Holiday and observance | Children's Day (South Sudan) |
| 144467 | December 23 | Holiday and observance | Christian Feast Day:Abassad (Coptic Church)John CantiusO EmmanuelPsote (Coptic Church)Thorlac Thorhallsson, patron saint of Iceland The last day of preparations before Christmas.December 23 (Eastern Orthodox liturgics) |
| 144468 | December 23 | Holiday and observance | Festivus, a holiday made popular by the sitcom Seinfeld |
| 144469 | December 23 | Holiday and observance | HumanLight (Secular humanism in United States) |
| 144470 | December 23 | Holiday and observance | Larentalia, in honor of Larenta. (Roman Empire) |
| 144471 | December 23 | Holiday and observance | Night of the Radishes (Oaxaca, Mexico) |
| 144472 | December 23 | Holiday and observance | The Emperor's Birthday, birthday of Akihito, the current Emperor of Japan. (Japan) |
| 144473 | December 23 | Holiday and observance | Tibb's Eve (Newfoundland and Labrador) |
| 144474 | December 23 | Holiday and observance | Victory Day (Egypt) |
| 144475 | December 23 | Holiday and observance | Foundation Day[disambiguation needed] Islami Jamiat Talaba Pakistan 1947 |
| 144476 | December 24 | Event | 502 – Chinese emperor Xiao Yan names Xiao Tong his heir designate. |
| 144477 | December 24 | Event | 640 – Pope John IV is elected. |
| 144478 | December 24 | Event | 759 – Tang dynasty poet Du Fu departs for Chengdu, where he is hosted by fellow poet Pei Di. |
| 144479 | December 24 | Event | 1144 – The capital of the crusader County of Edessa falls to Imad ad-Din Zengi, the atabeg of Mosul and Aleppo. |
| 144480 | December 24 | Event | 1294 – Pope Boniface VIII is elected, replacing St. Celestine V, who had resigned. |