1972Within the context of Coordinated Universal Time (UTC) it was the longest year ever, as two leap seconds were added during this 366-day year, an event which has not since been repeated. (If its start and end are defined using mean solar time [the legal time scale], its duration was 31622401.141 seconds of Terrestrial Time (or Ephemeris Time), which is slightly shorter than 1908). January 1972 January 1 – Kurt Waldheim becomes Secretary-General of the United Nations.
1937January 1937 January 1 – Anastasio Somoza García becomes President of Nicaragua. January 5 – Water levels begin to rise in the Ohio River in the United States, leading to the Ohio River flood of 1937, which continues into February, leaving 1 million people homeless and 385 people dead. January 15 – Spanish Civil War: Second Battle of the Corunna Road ends inconclusively. January 20 – Second inauguration of Franklin D. Roosevelt: Franklin D. Roosevelt is sworn in for a second term as President of the United States.
May 61527 – Spanish and German troops sack Rome; many scholars consider this the end of the Renaissance. 1536 – The Siege of Cuzco commences, in which Incan forces attempt to retake the city of Cuzco from the Spanish. 1541 – King Henry VIII orders English-language Bibles be placed in every church. In 1539 the Great Bible would be provided for this purpose. 1542 – Francis Xavier reaches Old Goa, the capital of Portuguese India at the time. 1594 – The Dutch city of Coevorden held by the Spanish, falls to a Dutch and English force.
November 9694 – At the Seventeenth Council of Toledo, Egica, a king of the Visigoths of Hispania, accuses Jews of aiding Muslims, sentencing all Jews to slavery. 1277 – The Treaty of Aberconwy, a humiliating settlement forced on Llywelyn ap Gruffudd by King Edward I of England, brings a temporary end to the Welsh Wars. 1313 – Louis the Bavarian defeats his cousin Frederick I of Austria at the Battle of Gammelsdorf. 1330 – At the Battle of Posada, Basarab I of Wallachia defeats the Hungarian army of Charles I Robert.
June 10671 – Emperor Tenji of Japan introduces a water clock (clepsydra) called Rokoku. The instrument, which measures time and indicates hours, is placed in the capital of Ōtsu. 1190 – Third Crusade: Frederick I Barbarossa drowns in the river Saleph while leading an army to Jerusalem. 1329 – The Battle of Pelekanon is the last attempt of the Byzantine Empire to retain its cities in Asia Minor. 1358 – Battle of Mello: The peasant forces of the Jacquerie are crushed by the army of the French nobility.
September 2961 BC – Pompey the Great celebrates his third triumph for victories over the pirates and the end of the Mithridatic Wars on his 45th birthday. 1011 – Danes capture Canterbury after a siege, taking Ælfheah, archbishop of Canterbury, as a prisoner. 1227 – Frederick II, Holy Roman Emperor, is excommunicated by Pope Gregory IX for his failure to participate in the Crusades during the Investiture Controversy. 1267 – The Treaty of Montgomery recognises Llywelyn ap Gruffudd as Prince of Wales, but only as a vassal of King Henry III.
1954January 1954 January 1 – The Soviet Union ceases to demand war reparations from West Germany. January 3 – The Italian broadcaster RAI officially begins transmitting. January 7 – Georgetown-IBM experiment: The first public demonstration of a machine translation system is held in New York, at the head office of IBM. January 10 – BOAC Flight 781, a de Havilland Comet jet plane, disintegrates in mid-air due to metal fatigue, and crashes in the Mediterranean near Elba; all 35 people on board are killed.
1959January 1959 January 1 – Cuba: Fulgencio Batista flees Havana when the forces of Fidel Castro advance. January 2 – Soviet lunar probe Luna 1 is the first human-made object to attain escape velocity from Earth. It reaches the vicinity of Earth's Moon, where it was intended to crash-land, but instead becomes the first spacecraft to go into heliocentric orbit. January 3 Alaska is admitted as the 49th U.S. state. The southernmost island of the Maldives archipelago, Addu Atoll, declares its independence from the Kingdom of the Maldives, initiating the United Suvadive Republic.
May 21293 – Roman Emperors Diocletian and Maximian appoint Galerius as Caesar to Diocletian, beginning the period of four rulers known as the Tetrarchy. 878 – Syracuse, Sicily, is captured by the Muslim Aghlabids after a nine-month siege. 879 – Pope John VIII gives blessings to Branimir of Croatia and to the Croatian people, considered to be international recognition of the Croatian state. 996 – Sixteen-year-old Otto III is crowned Holy Roman Emperor. 1349 – Dušan's Code, the constitution of the Serbian Empire, is enacted by Dušan the Mighty.
January 23393 – Roman emperor Theodosius I proclaims his eight-year-old son Honorius co-emperor. 971 – Using crossbows, Song dynasty troops soundly defeat a war elephant corps of the Southern Han at Shao. 1264 – In the conflict between King Henry III of England and his rebellious barons led by Simon de Montfort, King Louis IX of France issues the Mise of Amiens, a one-sided decision in favour of Henry that later leads to the Second Barons' War.
