The 20t o September is the 263rd day o the year (264t in lowp years) in the Gregorian Calendar, wi 102 days bidin.
- 1187 - Saladin stairts his Siege o Jerusalem.
- 1459 - First documentit mention o Bucharest.
- 1519 - Ferdinand Magellan sets sail frae Spain.
- 1596 - The ceety o Monterrey in Mexico (then New Spain) is foondit.
- 1863 - The Confederates win the Battle o Chickamauga in the American Ceevil War.
- 1870 - The Unification o Italy is completit.
- 1932 - Mohandas Karamchand Gandhi stairts a hunger strike in jyle in Pune.
- 1942 - In Letchev, Ukraine, the SS murthers 3,000 Jewish fowk in a single day.
- 1946 - The first Cannes film fest is held.
- 1967 - The ship "RMS Queen Elizabeth 2" is launched in Clydebank, on the wast coast o Scotland.
- 1984 - A suicide bomber attacks the Unitit States Embassy in Beirut, Lebanon, killin 20 fowk.
- 1990 - Sooth Ossetie declares unthirldom.
- 1999 - Unitit Naitions peacekeepin troops arrive on East Timor.
- 2001 - George W. Bush uses the term "War on Terror" for the first time.
- 2002 - The pairtial collapse o the Kolka Glacier in North Ossetie, Soothren Roushie, causes a rock-ice slide an avalanche. 125 fowk are kilt.
- 2003 - Voters in Latvie support, bi a majority, membership o the European Union.
- 2004 - Wikipaedia publishes airticles in its 100t leid.
- 2008 - A bomb attack on the Marriott Hotel in Islamabad, Pakistan, kills 54 fowk.
- 2011 - Umwhile Preses o Afghanistan Burhanuddin Rabbani is kilt in a terrorist attack.
- 2014 - John Key is electit for a 3rd term as Prime meenister o New Zealand.
- 2017 - Hurricane Maria hits Puerto Rico, causin much destruction, killin thoosands o fowk an leavin the whole isle withoot electreecity.
- 2019 - Climate chynge protests are held aroond the warld.
- 1161 - Emperor Takakura o Japan (d. 1181)
- 1486 - Arthur Tudor, Prince o Wales (d. 1502)
- 1735 - James Keir, Scots chemist, geologist an inventor (d. 1820)
- 1778 - Fabian Gottlieb von Bellingshausen, Baltic-German naval afficer an splorer (d. 1852)
- 1833 - Ernesto Teodoro Moneta, Italian jurnalist an pacifist (d. 1918)
- 1842 - James Dewar, Scots chemist (d. 1923)
- 1853 - Chulalongkorn, Keeng o Siam (d. 1910)
- 1878 - Upton Sinclair, American writer (d. 1968)
- 1881 - Alex Bennett, Scots fitbawer (d. 1940)
- 1925 - Ananda Mahidol, Keeng o Thailand (d. 1946)
- 1934 - Sophia Loren, Italian actress
- 1940 - Taro Aso, umwhile Prime meenister o Japan
- 1948 - George R. R. Martin, American writer
- 1961 - Caroline Flint, Inglis politeecian
- 1962 - Jim Al-Khalili, Inglis pheesicist, writer an braidcaster
- 1966 - Douglas Gordon, Scots airtist
- 1971 - Henrik Larsson, Swadish fitbawer
- 1972 - Victor Ponta, umwhile Prime meenister o Romanie
- 1975 - Juan Pablo Montoya, Colombian racin driver
- 1980 - Judith Schalansky, German writer, beuk designer an publisher
- 1981 - Feliciano Lopez, Spainyie tennis player
- 1993 - Julian Draxler, German fitbawer
- 1793 - Fletcher Christian, Inglis mutineer (b. 1764)
- 1863 - Jacob Grimm, German filologist, jurist an meethologist (b. 1785)
- 1898 - Theodor Fontane, German writer (b. 1819)
- 1957 - Jean Sibelius, Finnish componer (b. 1865)
- 1962 - Robert Colquhoun, Scots penter (b. 1914)
- 1971 - Giorgos Seferis, Greek poet (b. 1900)
- 1975 - Saint-John Perse, French writer (b. 1887)
- 1983 - Andy Beattie, Scots fitbawer (b. 1913)
- 2004 - Brian Clough, Inglis fitbaw manager (b. 1935)
- 2005 - Simon Wiesenthal, Austrick Holocaust survivor (b. 1908)
- 2011 - Burhanuddin Rabbani, Preses o Afghanistan (b. 1940)
- 2016 - Alan Cousin, Scots fitbawer (b. 1938)