November 27 is the 331st day of the year (332nd in leap years) in the Gregorian calendar; 34 days remain until the end of the year.
176 – Emperor Marcus Aurelius grants his son Commodus the rank of 'Imperator' and makes him Supreme Commander of the Roman legions.
395 – Rufinus, praetorian prefect of the East, is murdered by Gothic mercenaries under Gainas.
511 – King Clovis I dies at Lutetia and is buried in the Abbey of St Genevieve.
602 – Byzantine Emperor Maurice is forced to watch as the usurper Phocas executes his five sons before Maurice is beheaded himself.
1095 – Pope Urban II declares the First Crusade at the Council of Clermont.
1542 – Palace plot of Renyin year: A group of Ming dynasty palace women fail to murder the Jiajing Emperor, and are executed by slow-slicing, or death by a thousand cuts.
1727 – The foundation stone to the Jerusalem Church in Berlin is laid.
1809 – The Berners Street hoax is perpetrated by Theodore Hook in the City of Westminster, London.
1815 – Adoption of the Constitution of the Kingdom of Poland.
1830 – Saint Catherine Labouré experiences a Marian apparition.
1835 – James Pratt and John Smith are hanged in London; they are the last two to be executed for sodomy in England.
1856 – The Coup of 1856 leads to Luxembourg's unilateral adoption of a new, reactionary constitution.
1863 – American Civil War: Confederate cavalry leader John Hunt Morgan and several of his men escape the Ohio Penitentiary and return safely to the South.
1868 – American Indian Wars: Battle of Washita River: United States Army Lieutenant Colonel George Armstrong Custer leads an attack on Cheyenne living on reservation land.
1879 – War of the Pacific: Battle of Tarapacá: The confrontation between the Chilean Army and the Peruvian Army takes place in Tarapacá, the Peruvian victory is consummated with the death of the two generals and the capture the Chilean general in said place of battle, headed by the Peruvian victory of General Juan Buendía y Noregia.
1895 – At the Swedish–Norwegian Club in Paris, Alfred Nobel signs his last will and testament, setting aside his estate to establish the Nobel Prize after he dies.
1901 – The U.S. Army War College is established.
1912 – Spain declares a protectorate over the north shore of Morocco.