June 1

• June 1, 193
  The Roman Emperor Didius Julianus, being deposed and sentenced to death by the Senate in favor of Septimius Severus, is murdered by a soldier in his palace after 66 days of reign
• June 1, 907
  Zhu Wen, a military governor in China, murders the last emperor of Tang, Emperor Ai of Tang, and takes the throne for himself beginning the Period of The Five Dynasties and the Ten Kingdoms
• June 1, 1298
  The people of Riga with help of Grand Duke of Lithuania Vytenis defeat the order in the Battle of Turaida
• June 1, 1783
  Charles Byrne, known as the Irish giant standing at 2.3 meters, dies and is acquired by anatomist John Hunter to have Byrne's skeleton in his anatomy collection
• June 1, 1794
  English fleet under Richard Earl Howe defeat the French warship escort of a grain convoy, which becomes the first victory at sea versus France in war started in 1793
• June 1, 1802
  Tay Sơn dynasty, the period of peasant rebellions and decentralized dynasties in Vietnam, ends
• June 1, 1847
  The first Communist political party, the Communist League convenes in London, England with Karl Marx and Friedrich Engels as the dominant personalities
• June 1, 1864
  Hong Xiuquan, leader of the Taiping Heavenly Army, who has over 100,000 troops and controls an area bigger than France, dies from poisoning
• June 1, 1864
  Battle of Cold Harbor, Virginia, begins as Lee tried to turn Grant's flank
• June 1, 1874
  The British East India Company is dissolved
• June 1, 1907
  -33 degrees C are recorded in Sarmiento, Argentina, the South American record low
• June 1, 1916
  Battle of Jutland between Germany and United Kingdom, the largest naval battle and the only full-scale clash of battleships in the World War I, ends with inconclusive results
• June 1, 1941
  Evacuation of Crete ends and the remaining 9,000 British and 1,000 Greek soldiers surrender with total losses of manpower in the fight for the island: British army 12,000; navy 2,000; Greek 5,000; German 6,000
• June 1, 1944
  First operational electronic computer, Colossus, comes online
• June 1, 1980
  Cable News Network, or CNN, debuts, as the world's first 24-hour television news network, from its headquarters in Atlanta, Georgia, USA

February 25

• February 25, 1570
  Pope Pius V issues the bull Regnans in Excelsis which excommunicates Queen Elizabeth I and absolves her subjects from allegiance
• February 25, 1791
  President George Washington signs a bill creating the First Bank of the United States
• February 25, 1831
  The Polish revolutionaries halt the Russian advance into their country at the Battle of Olszynka Grochowska
• February 25, 1836
  Samuel Colt, an American inventor and industrialist, patents the first revolving barrel multi-shot firearm, which allows the shooter to fire 5 or 6 times before reloading
• February 25, 1856
  Congress of Paris between representatives of the great powers in Europe to make peace after Crimean War begins
• February 25, 1863
  US President Abraham Lincoln signs the National Currency Act into law, creating national banking system, comptroller of currency, allowing qualified banks to issue government-sponsored paper money in the banks' names
• February 25, 1910
  Dalai Lama flees Tibet from Chinese troops to British-Indies
• February 25, 1921
  Georgian Soviet Socialist Republic is proclaimed after invasion and occupation by Russian Soviet Federative Socialist Republic
• February 25, 1923
  Bread in Berlin, Germany rises to 2,000 marks due to hyperinflation in the Weimar Republic
• February 25, 1932
  Immigrant Adolf Hitler gets German citizenship
• February 25, 1939
  First Anderson bomb shelter in Britain erected in an Islington garden, named after Sir John Anderson with special responsibility for preparing air-raid precautions
• February 25, 1947
  The Allied Control Council of Germany issues Law No. 46, disbanding Prussia
• February 25, 1948
  The Communist Party of Czechoslovakia under Klement Gottwald, with Soviet backing, seize power in Czechoslovakia after coup d'aet, ending the last remaining democracy in Eastern Europe
• February 25, 1956
  Soviet party leader Nikita Khrushchev denounces Josef Stalin's purges and the personality cult at 20th Soviet Party Conference, ushering in a less repressive era in the Soviet Union
• February 25, 1964
  Cassius Marcellus Clay Jr., later accepted name Muhammad Ali, one of the greatest heavyweights in the sport's history, wins the world heavyweight championship for the first time
• February 25, 1980
  Military coup under DГ©si Bouterse and Roy Horb in Suriname ousts Prime Minister Henck Arron, replacing the government with a National Military Council and starting military dictatorship in Suriname
• February 25, 1992
  Khojaly Massacre, massacre of 613 Azerbaijani civilians by the Armenian, occurs in Khojaly
• February 25, 2006
  Uganda's President Yoweri Museveni wins his second re-election, sparking riots in Kampala by opposition supporters