October 15 is the 288th day of the year (289th in leap years) in the Gregorian calendar. There are 77 days remaining until the end of the year.

Events

• 1582 – Pope Gregory XIII implements the Gregorian calendar. In Italy, Poland, Portugal, and Spain, October 4 of this year is followed directly by October 15.
• 1764 – Edward Gibbon observes a group of friars singing in the ruined Temple of Jupiter in Rome, which inspires him to begin work on The History of the Decline and Fall of the Roman Empire.
• 1783 – The Montgolfier brothers‘ hot air balloon marks the first human ascent, by Jean-François Pilâtre de Rozier, (tethered balloon).
• 1793 – Queen Marie-Antoinette of France is tried and convicted in a swift, pre-determined trial in the Palais de Justice,Paris, and condemned to death the following day.
• 1815 – Napoleon I of France begins his exile on Saint Helena in the Atlantic Ocean.
• 1863 – American Civil War: The H. L. Hunley, the first submarine to sink a ship, sinks during a test, killing its inventor,Horace L. Hunley.
• 1864 – American Civil War: The Battle of Glasgow is fought, resulting in the surrender of Glasgow, Missouri, and its Union garrison, to the Confederacy.
• 1878 – The Edison Electric Light Company begins operation.
• 1880 – Mexican soldiers kill Victorio, one of the greatest Apache military strategists.
• 1888 – The “From Hell” letter sent by Jack the Ripper is received by investigators.
• 1894 – The Dreyfus affair: Alfred Dreyfus is arrested for spying.
• 1904 – The Russian Baltic Fleet leaves Reval, Estonia for Port Arthur during the Russo-Japanese War.
• 1910 – Airship America launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
• 1917 – World War I: At Vincennes outside of Paris, Dutch dancer Mata Hari is executed by firing squad for spying for the German Empire.
• 1928 – The airship, Graf Zeppelin completes its first trans-Atlantic flight, landing at Lakehurst, New Jersey, United States.
• 1932 – Tata Airlines (later to become Air India) makes its first flight.
• 1934 – The Soviet Republic of China collapses when Chiang Kai-shek‘s National Revolutionary Army successfully encircles Ruijin, forcing the fleeingCommunists to begin the Long March.
• 1939 – The New York Municipal Airport (later renamed La Guardia Airport) is dedicated.
• 1944 – The Arrow Cross Party (very similar to Hitler’s NSDAP (Nazi party)) takes power in Hungary.
• 1945 – World War II: The former premier of Vichy France Pierre Laval is shot by a firing squad for treason.
• 1951 – Mexican chemist Luis E. Miramontes conducts the very last step of the first synthesis of norethisterone, the progestin that would later be used in one of the first two oral contraceptives.
• 1953 – British nuclear test Totem 1 detonated at Emu Field, South Australia.
• 1956 – Fortran, the first modern computer language, is shared with the coding community for the first time.
• 1965 – Vietnam War: The Catholic Worker Movement stages an anti-war rally in Manhattan including a public burning of a draft card; the first such act to result in arrest under a new amendment to the Selective Service Act.
• 1966 – Black Panther Party is created by Huey P. Newton and Bobby Seale.
• 1969 – Vietnam War; The Moratorium to End the War in Vietnam is held in Washington DC and across the US. Over 2 million demonstrate nationally; about 250,000 in the nation’s capitol.
• 1970 – Thirty-five construction workers are killed when a section of the new West Gate Bridge in Melbourne collapses.
• 1970 – The domestic Soviet Aeroflot Flight 244 is hijacked and diverted to Turkey.
• 1971 – The start of the 2500-year celebration of Iran, celebrating the birth of Persia.
• 1979 – Black Monday in Malta. The Building of the Times of Malta, the residence of the opposition leader Eddie Fenech Adami and several Nationalist Party clubs are ransacked and destroyed by supporters of the Malta Labour Party.
• 1987 – The Great Storm of 1987 hits France and England.
• 1989 – Wayne Gretzky becomes the all-time leading points scorer in the NHL.
• 1990 – Soviet Union leader Mikhail Gorbachev is awarded the Nobel Peace Prize for his efforts to lessen Cold War tensions and open up his nation.
• 1997 – The first supersonic land speed record is set by Andy Green in ThrustSSC (United Kingdom), exactly 50 years and 1 day after Chuck Yeager first broke the sound barrier in the Earth’s atmosphere.
• 1997 – The Cassini probe launches from Cape Canaveral on its way to Saturn.
• 2001 – NASA‘s Galileo spacecraft passes within 112 miles of Jupiter‘s moon Io.
• 2003 – China launches Shenzhou 5, its first manned space mission.
• 2003 – The Staten Island Ferry boat Andrew J. Barberi runs into a pier at the St. George Ferry Terminal in Staten Island, killing 11 people and injuring 43.
• 2005 – A riot in Toledo, Ohio breaks out during a National Socialist/Neo-Nazi protest; over 100 are arrested.
• 2007 – Seventeen activists in New Zealand are arrested in the country’s first post 9/11 anti-terrorism raids.
• 2008 – The Dow Jones Industrial Average closed down 733.08 points, or 7.87%, the second worst day in the Dow’s history based on a percentage drop.
• 2011 – ¡¡¡ Grillapalooza !!!