312 Constantine the Great was said to have received his famous Vision of the Cross.
939 Edmund I succeeded Athelstan as King of England.
1275 Traditional founding of the city of Amsterdam.
1524 Italian Wars: The French troops laid siege to Pavia.
1553 Condemned as a heretic, Michael Servetus was burned at the stake.
1644 Second Battle of Newbury in the English Civil War.
1728 James Cook, British naval captain and explorer, was born (d. 1779).
1795 The United States and Spain signed the Treaty of Madrid, which established the boundaries between Spanish colonies and the U.S.
1811 Isaac Singer, American inventor, was born (d. 1875).
1838 Missouri governor Lilburn Boggs issued the Extermination Order, which ordered all Mormons to leave the state or be exterminated.
1854 – William Alexander Smith, Scottish religious leader, founded the Boys’ Brigade, was born (d. 1914).
1858 Theodore Roosevelt, 26th USA President, recipient of the Nobel Peace Prize, was born (d. 1919).
1870 Marshal François Achille Bazaine with 140,000 French soldiers surrendered to Prussian forces at Metz in one of the biggest French defeats of the Franco-Prussian War.
1904 The first underground New York City Subway line opened.
1914 Dylan Thomas, Welsh poet, was born (d. 1953).
1914 The British super-dreadnought battleship HMS Audacious (23,400 tons), was sunk off Tory Island by a minefield laid by the armed German merchant-cruiser Berlin.
1922 A referendum in Rhodesia rejected the country’s annexation to the South African Union.
1924 The Uzbek SSR was founded in the Soviet Union.
1932 Sylvia Plath, American poet, was born (d. 1963).
1939 John Cleese, British actor and writer, was born.
1943 New Zealanders from 8 Brigade, New Zealand 3rd Division, helped their American allies cleared Mono Island of its Japanese defenders.
1945 Luis Inácio Lula da Silva, President of Brazil, was born.
1950 Fran Lebowitz, American writer, was born.
1953 British nuclear test Totem 2 was carried out at Emu Field, South Australia.
1954 Benjamin O. Davis Jr. became the first African-American general in the United States Air Force.
1958 Simon Le Bon, English singer (Duran Duran), was born.
1961 NASA launched the first Saturn I rocket in Mission Saturn-Apollo 1.
1962 Major Rudolf Anderson of the United States Air Force became the only direct human casualty of the Cuban Missile Crisis when his U-2 reconnaissance airplane was shot down in Cuba by a Soviet-supplied SA-2 Guideline surface-to-air missile.
1964 Ronald Reagan delivered a speech “A Time for Choosing” which launched his political career.
1967 Catholic priest Philip Berrigan and others of the Baltimore Four protest the Vietnam War by pouring blood on Selective Service records.
1970 Alama Ieremia, All Black, was born.
1971 The Democratic Republic of the Congo was renamed Zaire.
1973 The Cañon City meteorite, a 1.4 kg chondrite type meteorite, struck in Fremont County, Colorado.
1981 The Soviet submarine U 137 ran aground on the east coast of Sweden.
1986 The British government suddenly deregulated financial markets, leading to a total restructuring of the way in which they operated in the country, in an event referred to as the Big Bang.
1988 Ronald Reagan decided to tear down the new U.S. Embassy in Moscow because of Soviet listening devices in the building structure.
1991 Turkmenistan achieved independence from the Soviet Union.
1992 United States Navy radioman Allen R. Schindler, Jr. was murdered by shipmate Terry M. Helvey for being gay.
1994 The U.S. prison population topped 1 million for the first time.
1994 Gliese 229B was the first Substellar Mass Object to be unquestionably identified.
1997 October 27, 1997 mini-crash: Stock markets around the world crashed because of fears of a global economic meltdown. The Dow Jones Industrial Average fell 554.26 points to 7,161.15. For the first time, the New York Stock Exchange activated its “circuit breakers” twice during the day eventually making the controversial move of closing the Exchange early.
2005 Riots began in Paris after the deaths of two Muslim teenagers.
2005 The SSETI Express micro-satellite was successfully launched from the Plesetsk Cosmodrome
2011 – The Royal Australian Navy announced that they discovered the wreck of a World War II submarine in Simpson Harbour, Papua New Guinea during Operation RENDER SAFE.
2014 – Britain withdrew from Afghanistan after the end of Operation Herrick which started on June 20, 2002 after 12 years four months and seven days.
2017 – Catalonia declared independence from Spain.
Sourced from NZ History Online & Wikipedia