| 137791 | December 5 | Death | 2013 – Fred Bassetti, American architect, founded Bassetti Architects (b. 1917) |
| 137792 | December 5 | Death | 2013 – William B. Edmondson, American diplomat, United States Ambassador to South Africa (b. 1927) |
| 137793 | December 5 | Death | 2013 – Nelson Mandela, South African lawyer and politician, 1st President of South Africa, Nobel Prize laureate (b. 1918) |
| 137794 | December 5 | Death | 2013 – Danny Matt, German-Israeli general (b. 1927) |
| 137795 | December 5 | Death | 2013 – Colin Wilson, English philosopher and author (b. 1931) |
| 137796 | December 5 | Death | 2014 – Ernest C. Brace, American captain and pilot (b. 1931) |
| 137797 | December 5 | Death | 2014 – Manuel De Sica, Italian composer (b. 1949) |
| 137798 | December 5 | Death | 2014 – Queen Fabiola of Belgium (b. 1928) |
| 137799 | December 5 | Death | 2014 – Jackie Healy-Rae, Irish hurdler and politician (b. 1931) |
| 137800 | December 5 | Death | 2014 – Silvio Zavala, Mexican historian and author (b. 1909) |
| 137801 | December 5 | Holiday and observance | Christian feast day:AberciusClement of Alexandria (Episcopal Church)Sabbas the SanctifiedDecember 5 (Eastern Orthodox liturgics) |
| 137802 | December 5 | Holiday and observance | Day of the Ninja (unofficial) |
| 137803 | December 5 | Holiday and observance | Discovery Day (Haiti and Dominican Republic) |
| 137804 | December 5 | Holiday and observance | International Volunteer Day for Economic and Social Development (International) |
| 137805 | December 5 | Holiday and observance | Saint Nicholas Eve (Belgium, Czech Republic, Slovakia, the Netherlands, Hungary, Romania, Germany, Poland and the UK)Krampusnacht (Austria) |
| 137806 | December 5 | Holiday and observance | The King's Birthday, National Day, and Father's Day (Thailand) |
| 137807 | December 6 | Event | 1060 – Béla I is crowned king of Hungary. |
| 137808 | December 6 | Event | 1240 – Mongol invasion of Rus': Kiev under Daniel of Galicia and Voivode Dmytro falls to the Mongols under Batu Khan. |
| 137809 | December 6 | Event | 1534 – The city of Quito in Ecuador is founded by Spanish settlers led by Sebastián de Belalcázar. |
| 137810 | December 6 | Event | 1648 – Colonel Thomas Pride of the New Model Army purges the Long Parliament of MPs sympathetic to King Charles I of England, in order for the King's trial to go ahead came to be known as "Pride's Purge". |
| 137811 | December 6 | Event | 1704 – Battle of Chamkaur: During the Mughal-Sikh Wars, an outnumbered Sikh Khalsa defeats a Mughal army. |
| 137812 | December 6 | Event | 1745 – Charles Edward Stuart's army begins retreat during the second Jacobite Rising. |
| 137813 | December 6 | Event | 1768 – The first edition of the Encyclopædia Britannica is published. |
| 137814 | December 6 | Event | 1790 – The U.S. Congress moves from New York City to Philadelphia. |
| 137815 | December 6 | Event | 1865 – The Thirteenth Amendment to the United States Constitution is ratified, banning slavery. |
| 137816 | December 6 | Event | 1877 – The first edition of The Washington Post is published. |
| 137817 | December 6 | Event | 1884 – The Washington Monument in Washington, D.C., is completed. |
| 137818 | December 6 | Event | 1897 – London becomes the world's first city to host licensed taxicabs. |
| 137819 | December 6 | Event | 1904 – Theodore Roosevelt articulated his "Corollary" to the Monroe Doctrine, stating that the U.S. would intervene in the Western Hemisphere should Latin American governments prove incapable or unstable. |
| 137820 | December 6 | Event | 1907 – A coal mine explosion at Monongah, West Virginia, kills 362 workers. |