| 136321 | December 1 | Holiday and observance | Self-governance Day or Fullveldisdagurinn (Iceland) |
| 136322 | December 1 | Holiday and observance | Teachers' Day (Panama) |
| 136323 | December 1 | Holiday and observance | World AIDS Day (International) |
| 136324 | December 2 | Event | 1409 – The University of Leipzig opens. |
| 136325 | December 2 | Event | 1697 – St Paul's Cathedral is consecrated in London. |
| 136326 | December 2 | Event | 1755 – The second Eddystone Lighthouse is destroyed by fire. |
| 136327 | December 2 | Event | 1763 – Dedication of the Touro Synagogue, in Newport, Rhode Island, the first synagogue in what will become the United States. |
| 136328 | December 2 | Event | 1775 – The USS Alfred becomes the first vessel to fly the Grand Union Flag (the precursor to the Stars and Stripes) the flag is hoisted by John Paul Jones. |
| 136329 | December 2 | Event | 1804 – At Notre Dame Cathedral in Paris, Napoleon Bonaparte crowns himself Emperor of the French, the first French Emperor in a thousand years. |
| 136330 | December 2 | Event | 1805 – War of the Third Coalition: Battle of Austerlitz – French troops under Napoleon Bonaparte decisively defeat a joint Russo-Austrian force. |
| 136331 | December 2 | Event | 1823 – Monroe Doctrine: In a State of the Union message, U.S. President James Monroe proclaims American neutrality in future European conflicts, and warns European powers not to interfere in the Americas. |
| 136332 | December 2 | Event | 1845 – Manifest Destiny: In a State of the Union message, U.S. President James K. Polk proposes that the United States should aggressively expand into the West. |
| 136333 | December 2 | Event | 1848 – Franz Josef I becomes Emperor of Austria. |
| 136334 | December 2 | Event | 1851 – French President Louis-Napoléon Bonaparte overthrows the Second Republic. |
| 136335 | December 2 | Event | 1852 – Louis-Napoléon Bonaparte becomes Emperor of the French as Napoleon III. |
| 136336 | December 2 | Event | 1859 – Militant abolitionist leader John Brown is hanged for his October 16 raid on Harpers Ferry, West Virginia. |
| 136337 | December 2 | Event | 1867 – At Tremont Temple in Boston, British author Charles Dickens gives his first public reading in the United States. |
| 136338 | December 2 | Event | 1899 – Philippine–American War: The Battle of Tirad Pass, termed "The Filipino Thermopylae", is fought. |
| 136339 | December 2 | Event | 1908 – Puyi becomes Emperor of China at the age of two. |
| 136340 | December 2 | Event | 1917 – World War I: Russia and the Central Powers sign an armistice at Brest-Litovsk, and peace talks leading to the Treaty of Brest-Litovsk begin. |
| 136341 | December 2 | Event | 1920 – Following more than a month of Turkish–Armenian War, the Turkish dictated Treaty of Alexandropol is concluded. |
| 136342 | December 2 | Event | 1927 – Following 19 years of Ford Model T production, the Ford Motor Company unveils the Ford Model A as its new automobile. |
| 136343 | December 2 | Event | 1930 – Great Depression: In a State of the Union message, U.S. President Herbert Hoover proposes a US$150 million public works program to help generate jobs and stimulate the economy. |
| 136344 | December 2 | Event | 1939 – New York City's LaGuardia Airport opens. |
| 136345 | December 2 | Event | 1942 – World War II: During the Manhattan Project, a team led by Enrico Fermi initiates the first self-sustaining nuclear chain reaction. |
| 136346 | December 2 | Event | 1943 – World War II: A Luftwaffe bombing raid on the harbour of Bari, Italy, sinks numerous cargo and transport ships, including the American SS John Harvey, which is carrying a stockpile of World War I-era mustard gas. |
| 136347 | December 2 | Event | 1947 – Jerusalem Riots of 1947: Riots break out in Jerusalem in response to the United Nations Partition Plan for Palestine. |
| 136348 | December 2 | Event | 1954 – Cold War: The United States Senate votes 65 to 22 to censure Joseph McCarthy for "conduct that tends to bring the Senate into dishonor and disrepute". |
| 136349 | December 2 | Event | 1954 – The Sino-American Mutual Defense Treaty, between the United States and Taiwan, is signed in Washington, D.C. |
| 136350 | December 2 | Event | 1956 – The Granma reaches the shores of Cuba's Oriente Province. Fidel Castro, Che Guevara and 80 other members of the 26th of July Movement disembark to initiate the Cuban Revolution. |