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.

June 15th


- Earliest day on which Father's Day can fall, while June 21 is the latest; celebrated on the third Sunday in June. (United States)
- Cagayan de Oro Charter Day (Cagayan de Oro City)
- Christian Feast Day
- Day of Valdemar and Reunion day (Flag Day) (Denmark)
- Mangaia Gospel Day (Mangaia)
- National Salvation Day (Azerbaijan)
- Separation Day (Delaware)
- Statehood Day (Arkansas)
- The first day of the month of Harh. (Sikhism)
- The ninth and final day of the Vestalia. (Roman Empire)

June 15th


- 2002 - Near-Earth asteroid 2002 MN misses the Earth by 75,000 miles (121,000 km), about one-third of the distance between the Earth and the Moon.
- 1996 - The Provisional Irish Republican Army explodes a large bomb in the middle of Manchester, England.
- 1994 - Israel and Vatican City establish full diplomatic relations.
- 1992 - The United States Supreme Court rules in United States v. Álvarez-Machaín that it is permissible for the USA to forcibly extradite suspects in foreign countries and bring them to the USA for trial, without approval from those other countries.
- 1985 - Rembrandt's painting Danaë is attacked by a man (later judged insane) who throws sulfuric acid on the canvas and cuts it twice with a knife.
- 1978 - King Hussein of Jordan marries American Lisa Halaby, who takes the name Queen Noor.
- 1955 - The Eisenhower administration stages the first annual "Operation Alert" (OPAL) exercise, an attempt to assess the USA's preparations for a nuclear attack.
- 1954 - UEFA (Union des Associations Européennes de Football) is formed in Basel, Switzerland.
- 1945 - The General Dutch Youth League (ANJV) is founded in Amsterdam, Netherlands.
- 1944 - World War II: Battle of Saipan: The United States invade Saipan.
- 1944 - In the Saskatchewan general election, the CCF, led by Tommy Douglas, is elected and forms the first socialist government in North America.
- 1937 - A German expedition led by Karl Wien loses sixteen members in an avalanche on Nanga Parbat. It is the worst single disaster to occur on an 8000m peak.
- 1934 - The U.S. Great Smoky Mountains National Park is founded.
- 1920 - Duluth lynchings in Minnesota.
- 1920 - A new border treaty between Germany and Denmark gives northern Schleswig to Denmark.
- 1919 - John Alcock and Arthur Brown complete the first nonstop transatlantic flight when they reach Clifden, County Galway, Ireland.
- 1916 - U.S. President Woodrow Wilson signs a bill incorporating the Boy Scouts of America, making them the only American youth organization with a federal charter.
- 1913 - The Battle of Bud Bagsak in the Philippines ends.
- 1911 - Tabulating Computing Recording Corporation (IBM) is incorporated.
- 1909 - Representatives from England, Australia and South Africa meet at Lord's and form the Imperial Cricket Conference.
- 1905 - Princess Margaret of Connaught marries Gustaf, Crown Prince of Sweden.
- 1904 - A fire aboard the steamboat SS General Slocum in New York City's East River kills 1,000.
- 1896 - The most destructive tsunami in Japan's history kills more than 22,000 people.
- 1888 - Crown Prince Wilhelm becomes Kaiser Wilhelm II; he will be the last Emperor of the German Empire.
- 1877 - Henry Ossian Flipper becomes the first African American cadet to graduate from the United States Military Academy.
- 1867 - Atlantic Cable Quartz Lode gold mine located in Montana.
- 1864 - American Civil War: The Siege of Petersburg begins.
- 1864 - Arlington National Cemetery is established when 200 acres (0.81 km2) around Arlington Mansion (formerly owned by Confederate General Robert E. Lee) are officially set aside as a military cemetery by U.S. Secretary of War Edwin M. Stanton.
- 1859 - Pig War: Ambiguity in the Oregon Treaty leads to the "Northwestern Boundary Dispute" between U.S. and British/Canadian settlers.
- 1846 - The Oregon Treaty establishes the 49th parallel as the border between the United States and Canada, from the Rocky Mountains to the Strait of Juan de Fuca.
- 1844 - Charles Goodyear receives a patent for vulcanization, a process to strengthen rubber.
- 1836 - Arkansas is admitted as the 25th U.S. state.
- 1808 - Joseph Bonaparte becomes King of Spain.
- 1804 - New Hampshire approves the Twelfth Amendment to the United States Constitution, ratifying the document.
- 1785 - Jean-François Pilâtre de Rozier, co-pilot of the first-ever manned flight (1783), and his companion, Pierre Romain, become the first-ever casualties of an air crash when their hot air balloon explodes during their attempt to cross the English Channel.
- 1776 - Delaware Separation Day – Delaware votes to suspend government under the British Crown and separate officially from Pennsylvania.
- 1775 - American Revolutionary War: George Washington is appointed commander-in-chief of the Continental Army.
- 1752 - Benjamin Franklin proves that lightning is electricity.
- 1667 - The first human blood transfusion is administered by Dr. Jean-Baptiste Denys.
- 1580 - Philip II of Spain declares William the Silent to be an outlaw.
- 1520 - Pope Leo X threatens to excommunicate Martin Luther in papal bull Exsurge Domine.
- 1389 - Battle of Kosovo: The Ottoman Empire defeats Serbs and Bosnians.
- 1246 - With the death of Duke Frederick II, the Babenberg dynasty ends in Austria.
- 1215 - King John of England puts his seal to the Magna Carta.
- 1184 - King Magnus V of Norway is killed at the Battle of Fimreite.
- 923 - Battle of Soissons: King Robert I of France is killed and King Charles the Simple is arrested by the supporters of Duke Rudolph of Burgundy.
- 763 - 763 BC – Assyrians record a solar eclipse that is later used to fix the chronology of Mesopotamian history.

June 15th


- 1990 - Denzel Whitaker, American actor
- 1990 - Miwa, Japanese singer-songwriter
- 1988 - Miku Ishida, Japanese teen idol
- 1985 - Nadine Coyle, Northern Irish singer (Girls Aloud)
- 1984 - Luke Hodge, Australian AFL player
- 1984 - Tim Lincecum, American baseball player
- 1984 - Mauro Rizzo, Italian footballer
- 1983 - Derek Anderson, American football player
- 1983 - Julia Fischer, German violinist
- 1983 - Laura Imbruglia, Australian musician
- 1982 - Katie Chapman, English footballer
- 1982 - Mike Delany, New Zealand rugby player
- 1982 - Abdur Razzak, Bangladeshi cricketer
- 1982 - Haley Scarnato, American singer
- 1981 - John Paintsil, Ghanaian footballer
- 1981 - Jeremy Reed, American baseball player
- 1981 - Jordi Vilasuso, American actor
- 1981 - Daniel Vosovic, American fashion designer
- 1980 - Mary Carey, American pornographic actress
- 1980 - Christopher Castile, American actor
- 1980 - Almudena Cid Tostado, Spanish gymnast
- 1980 - Cara Zavaleta, American model
- 1979 - Danielle Lineker, Welsh lingerie model
- 1979 - Yulia Nestsiarenka, Belarusian athlete
- 1979 - Julia Schultz, American model
- 1979 - Charles Zwolsman Jr., Dutch racing driver
- 1978 - Wilfred Bouma, Dutch footballer
- 1978 - Zach Day, American baseball player
- 1977 - Michael Doleac, American basketball player
- 1977 - Nina Liu, Australian actress
- 1976 - Gary Lightbody, Northern Irish singer and songwriter (Snow Patrol)
- 1975 - Elizabeth Reaser, American actress
- 1975 - Rachel Wacholder, American beach volleyballer
- 1973 - Neil Patrick Harris, American actor
- 1973 - Tore André Flo, Norwegian footballer
- 1973 - Pia Miranda, Australian actress
- 1973 - Greg Vaughan, American actor
- 1972 - Justin Leonard, American golfer
- 1972 - Andy Pettitte, American baseball player
- 1972 - Marcus Hahnemann, American footballer
- 1972 - Hank Von Helvete, Norwegian vocalist (Turbonegro)
- 1972 - Chloe Dao, American fashion designer
- 1971 - Jake Busey, American actor
- 1971 - Bif Naked, Canadian singer, poetess and actress
- 1971 - Edwin Brienen, Dutch director
- 1970 - Leah Remini, American actress
- 1970 - Gaëlle Méchaly, French soprano
- 1970 - Christian Bauman, American novelist and essayist
- 1970 - Zan Tabak, Croatian basketball player
- 1969 - Ice Cube, American rapper and actor
- 1969 - Oliver Kahn, German footballer
- 1969 - Cédric Pioline, French tennis player
- 1969 - Maurice Odumbe, Kenyan cricketer
- 1968 - Oh Dal-su, South Korean actor
- 1968 - Károly Güttler, Hungarian swimmer
- 1967 - Y?ji Ueda, Japanese voice actor
- 1966 - Tory Burch, American fashion designer
- 1966 - Idalis DeLeon, American actress and singer
- 1965 - Annelies Bredael, Belgian rower
- 1965 - Adam Smith, American politician
- 1964 - Courteney Cox, American actress
- 1964 - Gavin Greenaway, British composer
- 1964 - Michael Laudrup, Danish footballer
- 1963 - Mario Gosselin, Canadian Québécois ice hockey player
- 1963 - Helen Hunt, American actress
- 1963 - Blanca Portillo, Spanish actress
- 1963 - Nigel Walker, Welsh athlete and rugby union player
- 1962 - Thomas Mikal Ford, American actor
- 1962 - Andrea Rost, Hungarian soprano
- 1961 - Kai Eckhardt, German bassist and composer (Garaj Mahal, Vital Information)
- 1961 - Dave McAuley, Northern Irish boxer
- 1961 - Yoshimi Iwasaki, Japanese singer and actress
- 1961 - Scott Norton, American professional wrestler
- 1960 - Michèle Laroque, French actress
- 1960 - Marieke van Doorn, Dutch field hockey player
- 1959 - Alan Brazil, British footballer
- 1959 - Eileen Davidson, American actress
- 1958 - Wade Boggs, American baseball player
- 1958 - Riccardo Paletti, Italian racing driver (d. 1982)
- 1957 - Seppo Pääkkönen, Finnish actor
- 1956 - Ava Cadell, American actress
- 1956 - Robin Curtis, American actress
- 1956 - Polly Draper, American actress
- 1955 - Julie Hagerty, American actress
- 1955 - David Kennedy, American member of the Kennedy family (d. 1984)
- 1954 - James Belushi, American actor
- 1954 - Paul Rusesabagina, Rwandan hotel manager and humanitarian
- 1954 - Beverley Whitfield, Australian swimmer (d. 1996)
- 1953 - Rita Lee, American model and Playboy Playmate
- 1951 - Steve Walsh, American singer (Kansas)
- 1951 - Vance A. Larson, American artist (d. 2000)
- 1950 - Lakshmi Mittal, Indian industrialist
- 1949 - Dusty Baker, American baseball player and manager
- 1949 - Simon Callow, British actor
- 1949 - Russell Hitchcock, Australian singer (Air Supply)
- 1949 - Jim Varney, American actor (d. 2000)
- 1948 - Mike Holmgren, American football coach
- 1947 - John Hoagland, American photographer
- 1947 - Lee Purcell, American actress
- 1946 - Noddy Holder, British singer (Slade)
- 1945 - Miriam Defensor-Santiago, Filipino senator
- 1945 - Nicola Pagett, British actress
- 1945 - Lawrence Wilkerson, American military officer
- 1944 - Robert Keppel, American criminologist
- 1943 - Poul Nyrup Rasmussen, Danish politician
- 1943 - Johnny Hallyday, French singer and actor
- 1943 - Muff Winwood, British songwriter and bassist (Spencer Davis Group)
- 1943 - Lee Shallat-Chemel, American television director
- 1943 - Xaviera Hollander, Dutch author
- 1942 - John E. McLaughlin, American former Deputy Director of the Central Intelligence Agency (CIA)
- 1941 - Harry Nilsson, American singer and composer (d. 1994)
- 1939 - Ward Connerly, American political figure
- 1939 - Brian Jacques, British novelist
- 1938 - Billy Williams, American baseball player
- 1937 - Waylon Jennings, American singer (d. 2002)
- 1936 - Claude Brasseur, French actor
- 1936 - William Joseph Levada, American Catholic prelate
- 1934 - Jerry Buss, American basketball team owner
- 1934 - Mikel Laboa, Spanish Basque singer and songwriter (d. 2008)
- 1933 - Sergio Endrigo, Italian singer (d. 2005)
- 1933 - Mark Jones, English footballer (d. 1958)
- 1932 - Mario Cuomo, American politician
- 1930 - Marcel Pronovost, Canadian professional ice hockey player
- 1927 - Ibn-e-Insha, Pakistani humourist and Urdu poet (d. 1978)
- 1927 - Hugo Pratt, Italian comic book creator (d. 1995)
- 1926 - Mac McGarry, American quiz show host
- 1926 - Shigeru Kayano, Japanese Ainu activist (d. 2006)
- 1924 - Ezer Weizman, Israeli politician (d. 2005)
- 1922 - John Veale, English composer (d. 2006)
- 1921 - Erroll Garner, American musician (d. 1977)
- 1920 - Alberto Sordi, Italian actor and director (d. 2003)
- 1920 - Alla Kazanskaya, Russian stage and film actress (d. 2008)
- 1917 - John Bennett Fenn, American chemist, Nobel laureate
- 1917 - Lash La Rue, American actor (d. 1996)
- 1917 - Michalis Genitsaris, Greek singer and composer (d. 2005)
- 1916 - Herbert Simon, American economist, Nobel laureate (d. 2001)
- 1916 - Olga Erteszek, American lingerie company owner (d. 1989)
- 1915 - Thomas Huckle Weller, American virologist, Nobel laureate (d. 2008)
- 1914 - Saul Steinberg, Romanian-born American cartoonist (d. 1999)
- 1914 - Hilda Terry, American cartoonist (d. 2006)
- 1914 - Yuri Andropov, Soviet politician (d. 1984)
- 1911 - W.V. Awdry, British children's writer (d. 1997)
- 1910 - David Rose, American songwriter, composer and orchestra leader (d. 1990)
- 1908 - Sam Giancana, American mafioso (d. 1975)
- 1906 - Léon Degrelle, Belgian SS officer (d. 1994)
- 1902 - Erik Erikson, German-born psychoanalyst (d. 1994)
- 1900 - Gotthard Günther, German philosopher (d. 1984)
- 1900 - Otto Luening, German-born American composer (d. 1996)
- 1894 - Nikolai Chebotaryov, Ukrainian mathematician (d. 1947)
- 1894 - Robert Russell Bennett, American composer and arranger (d. 1981)
- 1888 - Ramón López Velarde, Mexican poet (d. 1921)
- 1884 - Harry Langdon, American actor (d. 1944)
- 1882 - Ion Antonescu, Romanian politician (d. 1946)
- 1875 - Herman Smith-Johannsen, Norwegian-born Canadian cross-country skier and supercentenarian (d. 1987)
- 1848 - Gheevarghese Mar Gregorios, Indian-born Syrian religious leader (d. 1902)
- 1843 - Edvard Grieg, Norwegian composer (d. 1907)
- 1809 - François-Xavier Garneau, French-Canadian poet and historian (d. 1866)
- 1805 - William Butler Ogden, American politician (d. 1877)
- 1801 - Benjamin Wright Raymond, American politician (d. 1883)
- 1789 - Josiah Henson, American minister and abolitionist (d. 1883)
- 1777 - David Daniel Davis, British politician (d. 1841)
- 1767 - Rachel Donelson Jackson, First Lady of the United States (d. 1828)
- 1765 - Johann Gottlieb Friedrich von Bohnenberger, German mathematician (d. 1831)
- 1765 - Martin Baum, American businessman and politician (d. 1831)
- 1755 - Antoine François, comte de Fourcroy, French chemist (d. 1809)
- 1640 - Bernard Lamy, French mathematician (d. 1715)
- 1624 - Hiob Ludolf, German orientalist (d. 1704)
- 1623 - Cornelis de Witt, Dutch politician (d. 1672)
- 1594 - Nicolas Poussin, French painter (d. 1665)
- 1519 - Henry FitzRoy, 1st Duke of Richmond and Somerset, illegitimate son of King Henry VIII of England (d. 1536)
- 1330 - Edward of Woodstock ("The Black Prince"), son of King Edward III of England and father of King Richard II of England (d. 1376)