| 10951 | January 26 | Death | 2015 – Lee Spick, English snooker player (b. 1980) |
| 10952 | January 26 | Holiday and observance | Australia Day (Australia) |
| 10953 | January 26 | Holiday and observance | Christian feast day:AlbericBlessed Gabriele AllegraPaulaTimothy and TitusJanuary 26 (Eastern Orthodox liturgics) |
| 10954 | January 26 | Holiday and observance | Duarte Day (Dominican Republic) |
| 10955 | January 26 | Holiday and observance | Liberation Day (Uganda) |
| 10956 | January 26 | Holiday and observance | Republic Day (India) |
| 10957 | January 27 | Event | 98 – Trajan succeeded his adoptive father Nerva as Roman emperor under his rule the Roman Empire would reach its maximum extent. |
| 10958 | January 27 | Event | 661 – The Rashidun Caliphate ends with the death of Ali. |
| 10959 | January 27 | Event | 1142 – Song dynasty General Yue Fei is executed. |
| 10960 | January 27 | Event | 1186 – Henry VI, the son and heir of the Holy Roman Emperor Frederick I, marries Constance of Sicily. |
| 10961 | January 27 | Event | 1302 – Dante Alighieri, the poet and politician, is exiled from Florence, Italy, where he served as one of six priors governing the city. |
| 10962 | January 27 | Event | 1343 – Pope Clement VI issues the papal bull Unigenitus to justify the power of the pope and the use of indulgences. Nearly 200 years later, Martin Luther would protest this. |
| 10963 | January 27 | Event | 1593 – The Vatican opens the seven-year trial of scholar Giordano Bruno. |
| 10964 | January 27 | Event | 1606 – Gunpowder Plot: The trial of Guy Fawkes and other conspirators begins, ending with their execution on January 31. |
| 10965 | January 27 | Event | 1695 – Mustafa II becomes the Ottoman sultan and Caliph of Islam in Istanbul on the death of Ahmed II. Mustafa rules until his abdication in 1703. |
| 10966 | January 27 | Event | 1776 – American Revolutionary War: Henry Knox's "noble train of artillery" arrives in Cambridge, Massachusetts. |
| 10967 | January 27 | Event | 1785 – The University of Georgia is founded, the first public university in the United States. |
| 10968 | January 27 | Event | 1825 – The U.S. Congress approves Indian Territory (in what is present-day Oklahoma), clearing the way for forced relocation of the Eastern Indians on the "Trail of Tears". |
| 10969 | January 27 | Event | 1868 – Boshin War: The Battle of Toba–Fushimi between forces of the Tokugawa shogunate and pro-Imperial factions begins, which will end in defeat for the shogunate, and is a pivotal point in the Meiji Restoration. |
| 10970 | January 27 | Event | 1869 – Boshin War: Tokugawa rebels establish the Ezo Republic in Hokkaidō. |
| 10971 | January 27 | Event | 1880 – Thomas Edison receives the patent on the incandescent lamp. |
| 10972 | January 27 | Event | 1888 – The National Geographic Society is founded in Washington, D.C. |
| 10973 | January 27 | Event | 1909 – The Young Left is founded in Norway. |
| 10974 | January 27 | Event | 1927 – Ibn Saud takes the title of King of Nejd. |
| 10975 | January 27 | Event | 1939 – First flight of the Lockheed P-38 Lightning. |
| 10976 | January 27 | Event | 1943 – World War II: The VIII Bomber Command dispatched ninety-one B-17s and B-24s to attack the U-Boat construction yards at Wilhelmshaven, Germany. This was the first American bombing attack on Germany of the war. |
| 10977 | January 27 | Event | 1944 – World War II: The 900-day Siege of Leningrad is lifted. |
| 10978 | January 27 | Event | 1945 – World War II: The Red Army liberates the remained inmates of the Auschwitz-Birkenau concentration camp built by the Nazi Germans on the territory of Poland. |
| 10979 | January 27 | Event | 1951 – Nuclear testing at the Nevada Test Site begins with a one-kiloton bomb dropped on Frenchman Flat. |
| 10980 | January 27 | Event | 1961 – Soviet submarine S-80 sinks with all hands lost. |