So you want to have a drink but you aren't sure why? Here are some GREAT reasons to call your friends over and have a party.

September 20th


- Christian Feast Day
- Farroupilha's Revolution (Brazilian state of Rio Grande do Sul)
- Independence Day of South Ossetia (not fully recognized)
- National Youth Day (Thailand)
- The seventh day of the Eleusinian Mysteries, when the secret rites in the Telesterion began. (ancient Greece)

September 20th


- 2003 - Maldives civil unrest: the death of prisoner Hassan Evan Naseem sparks a day of rioting in Malé.
- 2002 - The Kolka-Karmadon rock/ice slide.
- 2001 - In an address to a joint session of Congress and the American people, U.S. President George W. Bush declares a "war on terror".
- 2000 - The British MI6 Secret Intelligence Service building is attacked by a Russian-built Mark 22 anti-tank missile.
- 1990 - South Ossetia declares its independence from Georgia.
- 1984 - A suicide bomber in a car attacks the U.S. embassy in Beirut, Lebanon, killing twenty-two people.
- 1982 - The National Football League players begin a 57-day strike.
- 1979 - A coup d'état in the Central African Empire overthrows Emperor Bokasa I.
- 1977 - The Socialist Republic of Vietnam is admitted to the United Nations.
- 1973 - Billie Jean King beats Bobby Riggs in The Battle of the Sexes tennis match at the Houston Astrodome in Houston, Texas.
- 1970 - Syrian tanks roll into Jordan in response to continued fighting between Jordan and the fedayeen.
- 1967 - RMS Queen Elizabeth 2 is launched at John Brown & Company, Clydebank, Scotland. It is operated by the Cunard Line.
- 1962 - James Meredith, an African-American, is temporarily barred from entering the University of Mississippi.
- 1954 - New Zealand's Special Committee on Moral Delinquency in Children and Adolescents reports just ten days after concluding hearings.
- 1946 - The first Cannes Film Festival is held.
- 1942 - Holocaust in Letychiv, Ukraine. In the course of two days the German SS murders at least 3,000 Jews.
- 1930 - Syro-Malankara Catholic Church is formed by Archbishop Mar Ivanios.
- 1920 - Foundation of the Spanish Legion.
- 1906 - Cunard Line's RMS Mauretania is launched at the Swan Hunter & Wigham Richardson shipyard in Newcastle upon Tyne, England.
- 1891 - The first gasoline-powered car debuts in Springfield, Massachusetts, United States.
- 1881 - Chester A. Arthur is inaugurated as the 21st President of the United States following the assassination of James Garfield.
- 1871 - Bishop John Coleridge Patteson is martyred on the island of Nukapu, a Polynesian outlier island now in the Temotu Province of the Solomon Islands. He is the first bishop of Melanesia.
- 1870 - Bersaglieri corps enter Rome through the Porta Pia and complete the unification of Italy.
- 1863 - American Civil War: The Battle of Chickamauga ends.
- 1860 - The Prince of Wales (later King Edward VII of the United Kingdom) visits the United States.
- 1857 - The Indian Rebellion of 1857 ends with the recapture of Delhi by troops loyal to the East India Company.
- 1854 - Battle of Alma: British and French troops defeat Russians in the Crimea.
- 1848 - The American Association for the Advancement of Science is created.
- 1835 - Farroupilha's Revolution begins in Rio Grande do Sul, Brazil.
- 1792 - French troops stop allied invasion of France, during the War of the First Coalition at Valmy.
- 1737 - The finish of the Walking Purchase which forces the cession of 1.2 million acres (4,860 km²) of Lenape-Delaware tribal land to the Pennsylvania Colony.
- 1697 - The Treaty of Rijswijk is signed by France, England, Spain, the Holy Roman Empire and the Dutch Republic ending the Nine Years' War (1688–97).
- 1633 - Galileo Galilei is tried before the Congregation for the Doctrine of the Faith for teaching that the Earth orbits the Sun.
- 1596 - Diego de Montemayor founds the city of Monterrey in New Spain.
- 1519 - Ferdinand Magellan sets sail from Sanlúcar de Barrameda with about 270 men on his expedition to circumnavigate the globe.
- 1378 - Cardinal Robert of Geneva, called by some the Butcher of Cesena, is elected as Avignon Pope Clement VII, beginning the Papal schism.
- 1260 - the Great Prussian Uprising among the old Prussians begins against the Teutonic Knights.
- 1187 - Saladin begins the Siege of Jerusalem.
- 451 - The Battle of Châlons takes place in North Eastern France. Flavius Aetius's victory over Attila the Hun in a day of combat, is considered to be the largest battle in the ancient world.

September 20th


- 2003 - Princess Jennah bint Al Ghazi, member of the Jordanian Royal Family
- 1995 - Laura Dekker, Dutch Solo Sailor
- 1995 - Sammi Hanratty, American actress
- 1991 - Spencer Locke, American actress
- 1990 - Erich Gonzales, Filipina actress
- 1990 - Marilou, Quebec pop singer
- 1990 - John Tavares, Canadian ice hockey player
- 1987 - Jack Lawless, American drummer for the Jonas Brothers
- 1987 - Tito Tebaldi, Italian rugby player
- 1986 - Aldis Hodge, American actor
- 1984 - Brian Joubert, French figure skater
- 1983 - Yuna Ito, Japanese singer and actress
- 1983 - Ángel Sánchez, Puerto Rican baseball player
- 1982 - Jason Bacashihua, American ice hockey player
- 1982 - Aaron Burkart, German rally driver
- 1982 - Brian Fortuna, Strictly Come Dancing professional dancer
- 1981 - Feliciano López, Spanish tennis player
- 1981 - Jordan Tata, American baseball player
- 1981 - Joanie Dodds, America's Next Top Model contestant
- 1980 - Mariacarla Boscono, Italian fashion model
- 1980 - Vladimir Karpets, Russian cyclist
- 1980 - Jonathan Le Billon, British actor
- 1980 - Mehrzad Marashi, German singer
- 1980 - Madison Young, founder of Femina Potens Art Gallery
- 1979 - Sean Davis, English footballer
- 1978 - Jason Bay, Canadian baseball player
- 1978 - Patrizio Buanne, Italian singer
- 1978 - Sarit Hadad, Israeli singer
- 1978 - Dante Hall, American football player
- 1978 - T.J. Tucker, American baseball player
- 1977 - Namie Amuro, Japanese pop singer
- 1977 - Chris Mooney, American writer
- 1976 - Agata Buzek, Polish actress
- 1976 - Yo Hitoto, Japanese pop singer
- 1976 - Yui Horie, Japanese seiyuu
- 1976 - Enuka Okuma, Canadian actress
- 1976 - Reuben Singh, British entrepreneur
- 1975 - Asia Argento, Italian actress
- 1975 - Moon Bloodgood, American actress
- 1975 - Juan Pablo Montoya, Colombian race car driver
- 1974 - Michael Waddington, American defense lawyer
- 1973 - Ronald McKinnon, American football player
- 1971 - Todd Blackadder, New Zealand rugby player
- 1971 - Masashi Hamauzu, Japanese composer
- 1971 - Henrik Larsson, Swedish footballer
- 1971 - Dominika Peczynski, Swedish singer (Army of Lovers)
- 1969 - Victoria Dillard, American actress
- 1969 - Megumi Kudo, Japanese pro-wrestler
- 1969 - Richard Witschge, former Dutch footballer
- 1968 - Darrell Russell, American race car driver (d. 2004)
- 1968 - Vik Foxx, American rock musician
- 1968 - Van Jones, American attorney and activist
- 1968 - Leah Pinsent, Canadian actress
- 1968 - Tim Rogers, Australian singer / songwriter
- 1967 - Martin Harrison, American football player
- 1967 - Kristen Johnston, American actress
- 1967 - Gunnar Nelson, American musician (Nelson)
- 1967 - Matthew Nelson, American musician (Nelson)
- 1966 - Nuno Bettencourt, Portuguese rock musician
- 1965 - Robert Rusler, American actor
- 1964 - Randy Bradbury, American musician (Pennywise)
- 1964 - Maggie Cheung, Hong Kong actress
- 1963 - Velcrow Ripper, Canadian documentary filmmaker
- 1961 - Lisa Bloom, American lawyer and television personality
- 1960 - Deborah Roberts, American journalist and TV reporter
- 1959 - Danny Devos, Belgian artist
- 1958 - Arn Anderson, American wrestler
- 1957 - Alannah Currie, New Zealander musician (Thompson Twins)
- 1957 - Rich DiSilvio, American new media developer & artist
- 1957 - Michael Hurst, New Zealand actor
- 1956 - Gary Cole, American actor
- 1956 - Debbi Morgan, American actress
- 1954 - Henry Samueli, American NHL team owner
- 1951 - Cornelia Behm, German politician
- 1951 - Guy Lafleur, Canadian ice hockey player
- 1951 - Javier Marías, Spanish author, translator and academic
- 1949 - Mahesh Bhatt, Indian film director
- 1949 - Anthony Denison, American actor
- 1948 - George R. R. Martin, American writer
- 1948 - Chuck Panozzo, American musician (Styx)
- 1948 - John Panozzo, American musician (Styx) (d. 1996)
- 1947 - Bruce Pasternack, American CEO
- 1947 - Patrick Poivre d'Arvor, French TV journalist and writer
- 1947 - Steve Gerber, American comics writer (d. 2008)
- 1947 - Mia Martini, Italian singer (d. 1995)
- 1942 - Gérald Tremblay, Québec politician
- 1941 - Dale Chihuly, American glass artist
- 1940 - Taro Aso, Prime Minister of Japan
- 1939 - Robert L. Gerry III, American businessman
- 1937 - Birgitta Dahl, Swedish politician
- 1937 - Monica Zetterlund, Swedish actress and singer (d. 2005)
- 1935 - David Pegg, English footballer (d. 1958)
- 1935 - Keith Roberts, British science fiction author (d. 2000)
- 1935 - Jim Taylor, American football player
- 1934 - Takayuki Kubota, Japanese martial artist
- 1934 - Sophia Loren, Italian actress
- 1933 - Dennis Viollet, English former footballer (d. 1999)
- 1931 - Cherd Songsri, Thai filmmaker (d. 2006)
- 1929 - Anne Meara, American comic and actress
- 1928 - Donald Hall, American poet and US Poet Laureate
- 1928 - Kirsten Rolffes, Danish actress (d. 2000)
- 1927 - Colette Bonheur, Canadian singer (d. 1966)
- 1927 - Johnny Dankworth, English musician and composer (d. 2010)
- 1927 - Rachel Roberts, Welsh actress (d. 1980)
- 1925 - James Bernard, English film composer (d.2001)
- 1925 - Ananda Mahidol, King of Thailand (d. 1946)
- 1925 - Bobby Nunn, American singer (The Coasters) (d. 1986)
- 1924 - Gogi Grant, American singer
- 1924 - Akkineni Nageswara Rao, Indian Telugu actor
- 1923 - Geraldine Clinton Little, Irish-born poet (d. 1997)
- 1923 - Maurice Sauvé, Canadian economist and politician (d. 1992)
- 1922 - William Kapell, American pianist (d. 1953)
- 1920 - Alberto de Lacerda, Portuguese poet (d. 2007)
- 1920 - Jay Ward, American animated cartoonist (d. 1989)
- 1917 - Red Auerbach, American basketball coach (d. 2006)
- 1917 - Fernando Rey, Spanish-born actor (d. 1994)
- 1917 - Don Starr, American-born actor (d. 2005)
- 1916 - Malik Meraj Khalid, Former Caretaker Prime Minister of Pakistan (d. 2003)
- 1914 - Kenneth More, English actor (d. 1982)
- 1911 - Shriram Sharma Acharya, Indian spiritual leader (d. 1991)
- 1906 - Jean Dréville, French Film director (d. 1997)
- 1902 - Stevie Smith, British poet (d. 1971)
- 1899 - Leo Strauss, German-born philosopher (d. 1973)
- 1889 - Charles Reidpath, American athlete (d. 1975)
- 1886 - Charles Williams, British author (d. 1945)
- 1885 - Jelly Roll Morton, American jazz pianist, bandleader and composer (d. 1941)
- 1884 - Maxwell Perkins, American editor and publisher (d. 1947)
- 1880 - Louise Peete, American murderess (d. 1947)
- 1878 - Upton Sinclair, American writer (d. 1968)
- 1873 - Sidney Olcott, Canadian film director (d. 1949)
- 1873 - Ferenc Szisz, Hungarian race car driver (d. 1944)
- 1872 - Maurice Gamelin, French army general (d. 1958)
- 1861 - Herbert Putnam, Librarian of Congress (d. 1955)
- 1853 - Rama V, King of Thailand (d. 1910)
- 1851 - Henry Arthur Jones, English writer (d. 1929)
- 1844 - William H. Illingworth, American photographer (d. 1893)
- 1842 - James Dewar, Scottish chemist (d. 1923)
- 1833 - Ernesto Teodoro Moneta, Italian pacifist, recipient of the Nobel Peace Prize (d. 1918)
- 1831 - Kate Harrington, American teacher, writer and poet (d. 1917)
- 1778 - Fabian Gottlieb von Bellingshausen, Russian naval officer and explorer (d. 1852)
- 1746 - Móric Benyovszky Hungarian count (d. 1786)
- 1608 - Jean-Jacques Olier, French catholic priest, founder of The Sulpicians (d. 1657)
- 1599 - Christian the Younger, German Protestant military leader (d. 1623)
- 1486 - Arthur, Prince of Wales, son of King Henry VII of England (d. 1502)
- 524 - Kan B'alam I, ruler of Maya state of Palenque (d. 583)