The 18t o August is the 230t day o the year (231st in lowp years) in the Gregorian Calendar, wi 135 days bidin.
- 1201 - The ceety o Riga in present-day Latvie is foondit.
- 1868 - A total solar eclipse is seen ower Soothren an Sootheast Asie: It is observed bi Keeng Mongkut o Siam an Pierre Janssen discovers helium durin the event.
- 1870 - Franco-Proushie War: The Battle o Gravelotte is focht.
- 1877 - Mars' muin Phobos is discoverit.
- 1891 - A hurricane hits the Caribbean isle o Martinique, killin 700 fowk.
- 1917 - The Greek ceety o Thessaloniki is heavily damaged bi fire.
- 1920 - Weemen in the Unitit States gain the richt tae vote.
- 1940 - Warld War II: Battle o Breetain's "hardest day", wi heavy losses on baith sides.
- 1945 - Sukarno becomes Preses o Indonesie.
- 1959 - The Mini automobile goes on sale.
- 1964 - Sooth Africae is banned frae the Olympic Gemmes ower its Apartheid policy.
- 1966 - Vietnam War: The Battle o Long Tan taks place.
- 1971 - Vietnam War: Australie an New Zealand decide tae withdraw their troops frae Vietnam.
- 1976 - The Soviet Union's Luna 24 probe lands on the Muin.
- 1977 - Sooth Africae activist Steve Biko is arrestit.
- 1983 - Hurricane Alicia hits Texas, killin 21 fowk.
- 1988 - George H. W. Bush maks his famous "Read my lips, No new taxes" campaign promise.
- 2004 - A laundslide at Lochearnhead, Stirlin Cooncil, closes a section o the A84 road.
- 2005 - A massive pouer cut affects Java, Indonesie.
- 2008 - Pervez Musharraf demits as Preses o Pakistan.
- 2017 - 2017 Turku stobbin: Twa fowk are kilt in a stabbin attack in Turku, Finland.
- 2018 - Umwhile cricketer Imran Khan becomes Prime meenister o Pakistan.
- 2018 - Scots baund Runrig plays its feenal concert, in Stirlin.
- 2019 - A plaque is unveiled in Iceland tae mourn the loss o the meltit Okjokull Glacier.
- 2020 - A mutiny bi Malian sodgers turns intae a coup d'état; Preses Ibrahim Boubacar Keita is arrestit an later propales his demission.
- 2020 - Joe Biden accepts the Democratic Pairty nomination for Preses o the Unitit States; at age 77, he becomes the auldest Presidential nominee o a major US poleetical pairty.
- 1685 - Brook Taylor, Inglis mathemateecian (d. 1731)
- 1692 - Louis Henri, Duke o Bourbon, Prince o Condé (d. 1740)
- 1750 - Antonio Salieri, Italian componer (d. 1825)
- 1774 - Meriwether Lewis, American splorer (d. 1809)
- 1792 - John Russell, 1st Yerl Russell, Prime Meenister o the Unitit Kinrick (d. 1878)
- 1830 - Franz Joseph I o Austrick (d. 1916)
- 1835 - Robert Murdoch Smith, Scots ingineer, airchaeologist an diplomat (d. 1900)
- 1885 - Ivan Laing, Scots field hockey player (d. 1917)
- 1908 - Sam English, Erse fitbawer (d. 1967)
- 1916 - Don Keefer, American actor (d. 2014)
- 1920 - Shelley Winters, American actress (d. 2006)
- 1921 - Zdzislaw Zygulski, Jr., Pols art historian an professor (d. 2015)
- 1927 - Rosalynn Carter, First Lady o the Unitit States
- 1932 - Luc Montagnier, French virologist
- 1933 - Just Fontaine, French fitbawer
- 1933 - Roman Polanski, Pols-French director
- 1936 - Gulzar, Indie poet, lyricist an sangwriter
- 1936 - Robert Redford, American actor
- 1952 - Chaudhry Mohammad Sarwar, Scots-Pakistani politeecian
- 1952 - Patrick Swayze, American actor (d. 2009)
- 1962 - Felipe Calderon, umwhile Preses o Mexico
- 1963 - Billy Reid, Scots fitbawer
- 1969 - Edward Norton, American actor, director, screenwriter an producer
- 1969 - Christian Slater, American actor
- 1974 - Duncan Hodge, Scots rugby union player
- 1980 - Mark Burchill, Scots fitbawer
- 1980 - Esteban Cambiasso, Argentine fitbawer
- 1983 - Mika, Lebanese-Inglis sangster
- 1983 - Kris Boyd, Scots fitbawer
- 1985 - Bryan Ruiz, Costa Rican fitbawer
- 1986 - Ross McCormack, Scots fitbawer
- 1227 - Genghis Khan, Mongol Emperor
- 1276 - Pape Adrian V (b. 1220)
- 1503 - Pape Alexander VI (b. 1431)
- 1559 - Pape Paul IV (b. 1476)
- 1620 - Wanli Emperor o Cheenae (b. 1563)
- 1642 - Guido Reni, Italian penter (b. 1575)
- 1648 - Ibrahim o the Ottoman Empire (b. 1615)
- 1654 - Hugo Grotius, Dutch polymath (b. 1583)
- 1765 - Francis I, Haly Roman Emperor (b. 1708)
- 1803 - James Beattie, Scots poet an philosopher (b. 1735)
- 1850 - Honoré de Balzac, French writer (b. 1799)
- 1853 - Alexander Fraser, 16t Laird Saltoun, Scots peer (b. 1785)
- 1874 - William Fairbairn, Scots ceevil ingineer (b. 1789)
- 1936 - Federico García Lorca, Spaingie poet, playwricht an director (b. 1898)
- 1990 - B. F. Skinner, American psychologist (b. 1904)
- 2009 - Kim Dae-jung, Preses o Sooth Korea (b. 1925)
- 2012 - Scott McKenzie, American sangster-sangwriter (b. 1939)
- 2014 - Sam Galbraith, Scots politeecian (b. 1945)
- 2017 - Sir Bruce Forsyth, Inglis enterteener (b. 1928)
- 2018 - Kofi Annan, Ghanaian diplomat an Secretar-General o the Unitit Naitions (b. 1938)
- 18t o Augist is the feast day o the follaein saunts:
- St. Helena
- St. Agapitus
- Bl. Thomas Guengoro
- St. Daig Maccairaill
- St. Firminus o Metz
- St. Florus & Laurus
- St. Hugh the Little
- St. James Guengoro, Blissit
- St. John & Crispus
- St. Leo & Juliana
- Bl. Raynald o Ravenna
- Bl. Mary Guengoro
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