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.

July 31st


- Boqueron Battle Day (Paraguay)
- Christian Feast Day:
- End of the Trinity term (sitting of the High Court of Justice of England)
- Heroes' Day (Malaysia)
- Ka Hae Hawai?i Day, a Flag Day. (Hawaii)

July 31st


- 2007 - Operation Banner, the presence of the British Army in Northern Ireland, and the longest-running British Army operation ever, comes to an end.
- 2006 - Fidel Castro hands over power temporarily to brother Raúl Castro.
- 2002 - Hebrew University of Jerusalem is attacked when a bomb explodes in a cafeteria, killing 9.
- 1999 - Discovery Program: Lunar Prospector – NASA intentionally crashes the spacecraft into the Moon, thus ending its mission to detect frozen water on the moon's surface.
- 1992 - A Thai Airways Airbus A300-310 crashes into a mountain north of Kathmandu, Nepal killing 113.
- 1992 - Georgia joins the United Nations.
- 1991 - The United States and Soviet Union both sign the Start I Strategic Arms Reduction Treaty, the first to reduce (with verification) both countries' stockpiles.
- 1991 - The Medininkai Massacre in Lithuania. Soviet OMON attacks Lithuanian customs post in Medininkai, killing 7 officers and severely wounding one other.
- 1988 - 32 people are killed and 1,674 injured when a bridge at the Sultan Abdul Halim ferry terminal collapses in Butterworth, Malaysia.
- 1987 - A rare, class F4 tornado rips through Edmonton, Alberta, killing 27 people and causing $330 million in damage.
- 1981 - A 42 day-long strike of Major League Baseball ends.
- 1976 - Viking program: Viking 1 – NASA releases the famous Face on Mars photo.
- 1973 - A Delta Air Lines jetliner crashes while landing in fog at Logan Airport, Boston, Massachusetts killing 89.
- 1972 - Northeast Airlines flies its last flight before being integrated into Delta Air Lines the next day.
- 1972 - Operation Motorman: British troops move into the no-go areas of Belfast and Derry, Northern Ireland. End of Free Derry.
- 1972 - Three car bombs are detonated in Claudy, Northern Ireland, killing nine in what is believed to be a Provisional Irish Republican Army attack.
- 1971 - Apollo program: Apollo 15 astronauts become the first to ride in a lunar rover.
- 1970 - Black Tot Day: The last day of the officially sanctioned rum ration in the Royal Navy.
- 1964 - Ranger program: Ranger 7 sends back the first close-up photographs of the moon, with images 1,000 times clearer than anything ever seen from earth-bound telescopes.
- 1961 - At Fenway Park in Boston, Massachusetts, the first All-Star Game tie in major league baseball history occurs when the game is stopped in the 9th inning because of rain.
- 1959 - The Basque separatist organisation ETA is founded.
- 1954 - First ascent of K2, by an Italian expedition led by Ardito Desio.
- 1951 - Japan Airlines is established.
- 1948 - At Idlewild Field in New York, New York International Airport (later renamed John F. Kennedy International Airport) is dedicated.
- 1945 - Pierre Laval, the fugitive former leader of Vichy France, surrenders to Allied soldiers in Austria.
- 1945 - John K. Giles attempts to escape from Alcatraz prison.
- 1941 - Holocaust: under instructions from Adolf Hitler, Nazi official Hermann Göring, orders SS General Reinhard Heydrich to "submit to me as soon as possible a general plan of the administrative material and financial measures necessary for carrying out the desired final solution of the Jewish question."
- 1940 - A doodlebug train in Cuyahoga Falls, Ohio collides with a multi-car freight train heading in the opposite direction, killing 43 people.
- 1938 - Bulgaria signs a non-aggression pact with Greece and other states of Balkan Antanti (Turkey, Romania, Yugoslavia).
- 1938 - Archaeologists discover engraved gold and silver plates from King Darius in Persepolis.
- 1936 - The International Olympic Committee announces that the 1940 Summer Olympics will be held in Tokyo. However, the games are given back to the IOC after the Second Sino-Japanese War breaks out, and are eventually cancelled altogether because of World War II.
- 1932 - The NSDAP wins more than 38% of the vote in German elections.
- 1930 - The radio mystery program The Shadow is aired for the first time.
- 1919 - German national assembly adopts the Weimar constitution, which comes into force on August 14.
- 1913 - The Balkan States signs an armistice at Bucharest.
- 1895 - The Basque Nationalist Party (Euzko Alderdi Jeltzalea-Partido Nacionalista Vasco) is founded by Basque nationalist leader Sabino Arana.
- 1865 - The first narrow gauge mainline railway in the world opens at Grandchester, Australia.
- 1856 - Christchurch, New Zealand is chartered as a city.
- 1790 - First U.S. patent is issued to inventor Samuel Hopkins for a potash process.
- 1777 - The U.S. Second Continental Congress passes a resolution that the services of Marquis de Lafayette "be accepted, and that, in consideration of his zeal, illustrious family and connexions, he have the rank and commission of major-general of the United States."
- 1741 - Charles Albert of Bavaria invades Upper Austria and Bohemia.
- 1703 - Daniel Defoe is placed in a pillory for the crime of seditious libel after publishing a politically satirical pamphlet, but is pelted with flowers.
- 1667 - Second Anglo-Dutch War: Treaty of Breda ends the conflict.
- 1658 - Aurangzeb is proclaimed Moghul emperor of India.
- 1655 - Russo-Polish War (1654-1667): the Russian army enters the capital of the Grand Duchy of Lithuania, Vilnius, which it holds for six years.
- 1588 - The Spanish Armada is spotted off the coast of England.
- 1498 - On his third voyage to the Western Hemisphere, Christopher Columbus becomes the first European to discover the island of Trinidad.
- 1492 - The Jews are expelled from Spain when the Alhambra Decree takes effect.
- 1451 - Jacques Cœur is arrested by order of Charles VII of France.
- 1423 - Hundred Years' War: Battle of Cravant – the French army is defeated at Cravant on the banks of the river Yonne.
- 1200 - Attempted usurpation of John Komnenos the Fat.
- 1009 - Pope Sergius IV becomes the 142nd pope, succeeding Pope John XVIII.
- 904 - Thessalonica falls to the Arabs, who destroy the city.
- 781 - The oldest recorded eruption of Mt. Fuji (Traditional Japanese date: July 6, 781).
- -30 - Battle of Alexandria: Mark Antony achieves a minor victory over Octavian's forces, but most of his army subsequently deserts, leading to his suicide.

July 31st


- 1997 - Barbie Forteza, Filipina child actress
- 1992 - Curtis James, American runner
- 1990 - Olga Galchenko, Russian juggler
- 1989 - Victoria Azarenka, Belarusian tennis player
- 1988 - Krystal Meyers, American Christian singer/songwriter/musician
- 1987 - Michael Bradley, American footballer
- 1987 - Brittany Byrnes, Australian Actress
- 1986 - Evgeni Malkin, Russian ice hockey player
- 1985 - Daniel Ciofani, Italian footballer
- 1985 - Rémy Di Gregorio, French cyclist
- 1982 - Blessing Mahwire, Zimbabwean cricketer
- 1982 - DeMarcus Ware, American football player for the Dallas Cowboys
- 1981 - Eric Lively, American actor
- 1981 - J.Son Dinant, American comedian
- 1981 - Ira Losco, Maltese singer
- 1981 - Matthew Sanders, American singer (Avenged Sevenfold)
- 1980 - Mils Muliaina, New Zealand rugby union player
- 1980 - Mikko Hirvonen, Finnish Rally Driver
- 1979 - Jaco Erasmus, South African-born Italian rugby player
- 1979 - J. J. Furmaniak, American baseball player
- 1979 - Per Krøldrup, Danish footballer
- 1979 - Jade Kwan, Hong Kong singer
- 1979 - Carlos Marchena, Spanish footballer
- 1979 - B. J. Novak, American actor
- 1978 - Will Champion, English musician (Coldplay)
- 1978 - Zeta Makripoulia, Greek actress, model and TV presenter
- 1978 - Nick Sorensen, American football player
- 1978 - Justin Wilson, English racing driver
- 1977 - Tim Couch, American football player
- 1976 - Joshua Cain, American musician (Motion City Soundtrack)
- 1976 - Paulo Wanchope, Costa Rican footballer
- 1975 - Randy Flores, American baseball player
- 1975 - Andrew Hall, Former South African cricketer
- 1975 - Simon Hirst, British radio DJ
- 1975 - Gabe Kapler, American baseball player and manager
- 1975 - Poesy Liang, Founder of Helping Angels
- 1975 - Mike Lincoln, American baseball player
- 1975 - Ruben Patterson, American basketball player
- 1975 - Allan von Schenkel, American musician
- 1974 - Emilia Fox, English actress
- 1974 - Jonathan Ogden, American football player
- 1973 - Nathan Brown, Australian rugby league player
- 1973 - Fabulous Flournoy American basketball player and coach Newcastle Eagles
- 1972 - Giorgos Kapoutzidis, Greek screenwriter and actor
- 1971 - Gus Frerotte, American football player
- 1971 - John Lowery, American guitarist
- 1970 - Dave Wedge, American journalist
- 1970 - Amanda Stepto, Canadian actress
- 1970 - Ahmad Akbarpour, Iranian writer
- 1970 - Ben Chaplin, English actor
- 1970 - Giorgos Sigalas, Greek basketball player
- 1969 - David Cash, American professional wrestler
- 1969 - Loren Dean, American actor
- 1969 - Kenneth D. Schisler, American politician
- 1968 - Saeed-Al-Saffar, Former UAE cricketer
- 1967 - Minako Honda, Japanese singer and musical actress (d. 2005)
- 1967 - Mitsuo Iwata, Japanese seiy?
- 1967 - Tony Massenburg, American basketball player
- 1967 - Tim Wright (musician), Composer
- 1966 - Dean Cain, American actor
- 1965 - Scott Brooks, American basketball player
- 1965 - John Laurinaitis, American professional wrestler
- 1965 - J. K. Rowling, British writer
- 1965 - Julian Richards, British film director
- 1964 - Jim Corr, Irish singer and musician (The Corrs)
- 1963 - Brian Skrudland, Canadian ice hockey player
- 1963 - Norman Cook, British musician (The Housemartins, Freak Power, Beats International, Fatboy Slim)
- 1962 - John Chiang, American politician
- 1962 - Kevin Greene, American football player
- 1962 - Wesley Snipes, American actor
- 1960 - Dale Hunter, Canadian ice hockey player
- 1959 - Stanley Jordan, American jazz guitarist
- 1959 - Andrew Marr, British journalist and political commentator
- 1958 - Bill Berry, American musician (R.E.M.)
- 1958 - Mark Cuban, American businessman and basketball team owner
- 1957 - Daniel Ash, British musician (Bauhaus)
- 1957 - Leon Durham, American baseball player
- 1957 - Dirk Blocker, American actor
- 1956 - Deval Patrick, American politician, 71st governor of Massachusetts
- 1956 - Bill Callahan, American football coach
- 1956 - Michael Biehn, American actor
- 1955 - Jakie Quartz, French singer
- 1954 - Derek Smith, Canadian ice hockey player
- 1953 - Ted Baillieu, Australian politician
- 1953 - James Read, American actor
- 1953 - Jimmy Cook, former South African cricketer
- 1952 - Chris Ahrens, American ice hockey player
- 1952 - Alan Autry, American football player and politician
- 1952 - Helmuts Balderis, Latvian hockey player
- 1952 - João Barreiros, Portuguese writer
- 1951 - Evonne Goolagong, Australian tennis player
- 1951 - Barry Van Dyke, American actor
- 1950 - Lane Davies, American actor
- 1950 - Steve Miller, American writer
- 1946 - Bob Welch, American musician
- 1946 - Karen Zerby, American religious leader
- 1945 - Gary Lewis, American vocalist (Gary Lewis & the Playboys)
- 1945 - William Weld, 68th Governor of Massachusetts
- 1944 - Geraldine Chaplin, American actress
- 1944 - Jonathan Dimbleby, British journalist and television presenter
- 1944 - Robert C. Merton, American mathematician
- 1943 - William Bennett, 3rd United States Secretary of Education
- 1943 - Susan Flannery, American actress
- 1943 - Lobo, American singer and songwriter
- 1943 - Sab Shimono, Japanese-American actor
- 1941 - Amarsinh Chaudhary, Indian politician (d. 2004)
- 1940 - Carol J. Clover, American academic
- 1939 - France Nuyen, French actress
- 1936 - Vic Davalillo, Venezuelan baseball player
- 1935 - Yvon Deschamps, French-Canadian author and humorist
- 1935 - Geoffrey Lewis, American actor
- 1933 - Cees Nooteboom, Dutch writer
- 1932 - Ted Cassidy, American actor (d. 1979)
- 1932 - John Searle, American philosopher
- 1931 - Kenny Burrell, American guitarist
- 1931 - Nick Bollettieri, American tennis coach
- 1931 - Ivan Rebroff, German singer (d. 2008)
- 1930 - Oleg Popov, Russian clown
- 1929 - Don Murray, American actor
- 1929 - José Santamaria, Uruguayan footballer
- 1929 - Lynne Reid Banks, British author
- 1929 - Gilles Carle, Canadian film director and screenwriter (d. 2009)
- 1926 - Hilary Putnam, American philosopher
- 1923 - Ahmet Ertegün, Turkish-born record company executive (d. 2006)
- 1923 - Jimmy Evert, American tennis coach and father of Chris Evert
- 1922 - Hank Bauer, American baseball player and manager (d. 2007)
- 1921 - Peter Benenson, British founder of Amnesty International (d. 2005)
- 1921 - Donald Malarkey, American World War II hero
- 1921 - Whitney Young, American civil rights activist (d. 1971)
- 1920 - James Esdras Faust, American religious leader (d. 2007)
- 1919 - Curt Gowdy, American sports announcer (d. 2006)
- 1919 - Primo Levi, Italian author and chemist (d. 1987)
- 1918 - Paul D. Boyer, American chemist, Nobel Prize Laureate
- 1918 - Hank Jones, American pianist (d. 2010)
- 1916 - Billy Hitchcock, American baseball player and official (d. 2006)
- 1916 - Bill Todman, American game show producer (d. 1979)
- 1916 - Sibte Hassan, Pakistani activist (d. 1986)
- 1914 - Louis de Funès, French actor and comedian (d. 1983)
- 1913 - Bryan Hextall, Canadian ice hockey player (d. 1984)
- 1912 - Bill Brown, Australian cricketer (d. 2008)
- 1912 - Milton Friedman, American economist, Nobel laureate (d. 2006)
- 1912 - Irv Kupcinet, American newspaper columnist (d. 2003)
- 1911 - George Liberace, American musician (d. 1983)
- 1909 - Erik von Kuehnelt-Leddihn, Austrian writer and polyglot (d. 1999)
- 1904 - Brett Halliday, American writer (d. 1977)
- 1901 - Jean Dubuffet, French painter and sculptor (d. 1985)
- 1894 - Fred Keenor, Welsh footballer (d. 1972)
- 1892 - Herbert W. Armstrong, American evangelist, author and publisher (d. 1986)
- 1892 - Joseph Charbonneau, French-Canadian Roman Catholic archbishop (d. 1959)
- 1887 - Hans Freyer, German sociologist (d. 1969)
- 1886 - Salvatore Maranzano, Sicilian-born American organized crime figure (d. 1931)
- 1884 - Carl Friedrich Goerdeler, German politician (d. 1945)
- 1883 - Fred Quimby, American film producer (d. 1965)
- 1880 - Munshi Premchand, Indian Author (d. 1936)
- 1867 - Sebastian S. Kresge, American merchant and philanthropist (d. 1966)
- 1860 - Mary Vaux Walcott, American artist and naturalist (d. 1940)
- 1858 - Richard Dixon Oldham, British geologist (d. 1936)
- 1843 - Peter Rosegger, Austrian poet (d. 1918)
- 1837 - William Quantrill, American Civil War rebel guerrilla leader (d. 1865)
- 1835 - Henri Brisson, French statesman (d. 1912)
- 1835 - Paul du Chaillu, French explorer (d. 1903)
- 1825 - William S. Clark, American senator and scholar (d. 1886)
- 1816 - George Henry Thomas, American general (d. 1870)
- 1803 - John Ericsson, Swedish inventor and engineer (d. 1889)
- 1800 - Friedrich Wöhler, German chemist and founder of organic chemistry (d. 1882)
- 1777 - Pedro Ignacio de Castro Barros, Argentine statesman and priest (d. 1849)
- 1737 - Princess Augusta of Great Britain (d. 1813)
- 1724 - Noël François de Wailly, French lexicographer (d. 1801)
- 1718 - John Canton, English physicist (d. 1772)
- 1704 - Gabriel Cramer, Swiss mathematician (d. 1752)
- 1702 - Jean Denis Attiret, French Jesuit missionary and painter (d. 1768)
- 1598 - Alessandro Algardi, Italian sculptor and architect (d. 1654)
- 1527 - Maximilian II, Holy Roman Emperor (d. 1576)
- 1396 - Philip III, Duke of Burgundy (d. 1467)
- 1143 - Emperor Nijo of Japan (d. 1165)