1399 - Henry IV is proclaimed King of England.
1744 - France and Spain defeat the Kingdom of Sardinia at the Battle of Madonna dell'Olmo.
1791 - The Magic Flute, the last opera composed by Mozart receives its premiere performance at Freihaus-Theater auf der Wieden in Vienna, Austria.
1791 - The National Constituent Assembly in Paris is dissolved; Parisians hail Maximilien Robespierre and Jérôme Pétion as incorruptible patriots.
1813 - Battle of Bárbula: Simón Bolívar defeats Santiago Bobadilla.
1860 - Britain's first tram service begins in Birkenhead, Merseyside.
1882 - The world's first commercial hydroelectric power plant (later known as Appleton Edison Light Company) begins operation on the Fox River in Appleton, Wisconsin, United States.
1888 - Jack the Ripper kills his third and fourth victims, Elizabeth Stride and Catherine Eddowes.
1895 - Madagascar becomes a French protectorate.
1901 - Hubert Cecil Booth patents the vacuum cleaner.
1903 - The new Gresham's School is officially opened by Field Marshal Sir Evelyn Wood.
1906 - Real Academia Galega, Galician language biggest linguistic authority starts working in Havana.
1927 - Babe Ruth becomes the first baseball player to hit 60 home runs in a season
1931 - Start of "Die Voortrekkers" youth movement for Afrikaners in Bloemfontein, South Africa.
1935 - The Hoover Dam, astride the border between the U.S. states of Arizona and Nevada, is dedicated.
1938 - At 2:00 am, Britain, France, Germany and Italy sign the Munich Agreement, allowing Germany to occupy the Sudetenland region of Czechoslovakia.
1938 - The League of Nations unanimously outlaws "intentional bombings of civilian populations".
1939 - General Władysław Sikorski becomes commander-in-chief of the Polish Government in exile.
1941 - World War II: Holocaust in Kiev, Ukraine: German Einsatzgruppe C complete Babi Yar massacre. According to the Einsatzgruppen Operational Situation Report No. 101, at least 33,771 Jews from Kiev and its suburbs are killed at Babi Yar on September 29 – 30, 1941.
1945 - Bourne End rail crash, Hertfordshire, England killed 43
1947 - The Islamic Republic of Pakistan joins the United Nations.
1947 - The World Series, featuring the New York Yankees and the Brooklyn Dodgers, is televised for the first time.
1949 - The Berlin Airlift ends.
1954 - The U.S. Navy submarine USS Nautilus is commissioned as the world's first nuclear reactor powered vessel.
1955 - Film icon James Dean dies in a road accident at age 24.
1962 - Mexican-American labor leader César Chávez founds the United Farm Workers.
1962 - James Meredith enters the University of Mississippi, defying segregation.
1965 - General Suharto rises to power after an alleged coup by the Communist Party of Indonesia. In response, Suharto and his army massacre over a million Indonesians suspected of being communists.
1966 - The British protectorate of Bechuanaland declares its independence, and becomes the Republic of Botswana. Seretse Khama takes office as the first President.
1967 - BBC Radio 1 is launched and Tony Blackburn presents its first show; the BBC's other national radio stations also adopt numeric names.
1968 - The Boeing 747 is rolled out and shown to the public for the first time at the Boeing Everett Factory.
1970 - Jordan makes a deal with the Popular Front for the Liberation of Palestine (PFLP) for the release of the remaining hostages from the Dawson's Field hijackings.
1975 - The Hughes (later McDonnell-Douglas, now Boeing) AH-64 Apache makes its first flight.
1977 - Due to US budget cuts and dwindling power reserves, the Apollo program's ALSEP experiment packages left on the Moon are shut down.
1977 - Philippine political prisoners, Eugenio Lopez, Jr. and Sergio Osmeña III successfully escapes from Fort Bonifacio Maximum Security Prison in the Philippines.
1979 - The Hong Kong MTR commences service with the opening of its Modified Initial System (aka. Kwun Tong Line).
1980 - Ethernet specifications are published by Xerox working with Intel and Digital Equipment Corporation.
1982 - Cyanide-laced Tylenol kills six people in the Chicago area. Seven are killed in all. The incident is known as the Tylenol murders.
1986 - Mordechai Vanunu, who revealed details of Israel covert nuclear program to British media, is kidnapped in Rome, Italy.
1989 - Foreign Minister of West Germany Hans-Dietrich Genscher's speech from the balcony of the German embassy in Prague.
1990 - The Dalai Lama unveils the Canadian Tribute to Human Rights in Canada's capital city of Ottawa.
1991 - President Jean-Bertrand Aristide of Haiti is forced from office.
1993 - An earthquake hits India's Latur and Osmanabad district of Marathwada (Aurangabad division) in Maharashtra state leaving tens of thousands of people dead and many more homeless.
1994 - Aldwych tube station (originally Strand Station) of the London Underground closed upon September 30th, after eighty-eight years of service.
1999 - Japan's worst nuclear accident at a uranium reprocessing facility in Tōkai-mura, northeast of Tokyo.
2004 - The first images of a live giant squid in its natural habitat are taken 600 miles south of Tokyo.
2004 - The AIM-54 Phoenix, the primary missile for the F-14 Tomcat, is retired from service. Almost two years later, the Tomcat is retired.
2005 - The Parliament of Catalonia passes with 120 plus votes and 15 against, the Project of New Catalan Statute of Autonomy, proclaiming in its article 1, "Catalonia is a nation".
2005 - The controversial drawings of Muhammad are printed in the Danish newspaper Jyllands-Posten.
2006 - the National Assembly of the Republic of Serbia adopted the Constitutional Act that proclaimed the new Constitution of Serbia.