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17th Cavalry Regiment
The 17th Cavalry Regiment is a United States Army regiment constituted in 1916 at Fort Bliss, Texas, best known for its air cavalry squadrons in the Vietnam War.
17th century
The 17th century (1601–1700), the seventeenth century, was a period of the Thirty Years' War, the English revolutions, the General Crisis linked to the Little Ice Age, the VOC's founding in 1602, the Scientific Revolution, and expanding global trade.
17th Lok Sabha
17th Lok Sabha: India's House of the People elected 2019, dissolved 5 June 2024; 274 sittings (lowest for a full term), 78 women MPs, 221 Bills passed, first House with no Deputy Speaker.
17th Moscow International Film Festival
17th Moscow International Film Festival (XVII ММКФ), held 8–19 July 1991 in Moscow; jury president Oleg Yankovsky; Golden St. George to Karen Gevorkyan's Spotted Dog Running at the Edge of the Sea amid a US studios' piracy boycott.
17th Screen Actors Guild Awards
17th Screen Actors Guild Awards, held January 30, 2011 at the Shrine Exposition Center, honored 2010 performances; The King's Speech won cast and Colin Firth lead actor, Boardwalk Empire and Modern Family took TV ensembles, Ernest Borgnine received the Life Achievement Award.
17th Tamil Nadu Assembly
17th Tamil Nadu Legislative Assembly, elected 23 April 2026: TVK won 108 of 234 seats on debut, DMK 59, AIADMK 47; hung assembly, Joseph Vijay sworn in as Chief Minister 10 May 2026.
17th-century electrical studies
17th-century electrical studies, the century after Gilbert's De Magnete, expanded the list of electrics, built the first frictional machine with von Guericke's 1663 sulfur globe, and observed electric repulsion.
17zuoye (一起作业)
17zuoye (一起作业), formerly Sunny Education Inc., is a Beijing-based Chinese K-12 education technology company founded in 2011 by Liu Chang and Xiao Dun, known for its free homework platform serving over 60 million users.
18 (number)
18 (eighteen; Roman numeral XVIII) is the natural number following 17 and preceding 19, known as the age of legal adulthood and the holes in a golf round.
18 Again (어게인)
18 Again (18 어게인; 18 Eogein) is a 2020 JTBC Korean drama, a remake of the 2009 film 17 Again, starring Lee Do-hyun, Kim Ha-neul, and Yoon Sang-hyun: a 37-year-old facing divorce becomes 18 again and attends school with his twin children. 16 episodes, directed by Ha Byung-hoon.
18 Del
18 Del (18 Delphini) is a G6 III giant star about 249 light-years away hosting the gas giant 18 Del b, a 9.2-Jupiter-mass planet on a 983-day orbit found by radial velocity in 2008, plus a distant M-dwarf companion 18 Del B.
18 Melpomene
18 Melpomene, (18) Melpomene, large S-type main-belt asteroid discovered 24 June 1852 by John Russell Hind in London; about 142-146 km across, once suspected of having a moon from a 1978 occultation, later searches found it single.
18 Pages
18 Pages (18 పేజీస్), 2022 Telugu romantic drama directed by Palnati Surya Pratap from Sukumar's story, starring Nikhil Siddhartha and Anupama Parameswaran; released 23 December 2022, about a man who falls for a woman through her diary.
18 Scorpii
18 Scorpii (18 Sco) is a G2 Va star in northern Scorpius, regarded as the closest known solar twin. It was identified by Porto de Mello and da Silva in 1997.
18-Crown-6
18-Crown-6 is a cyclic polyether, or crown ether, with 18 ring atoms including six oxygens; it selectively binds potassium cations and dissolves alkali-metal salts in organic solvents.
18-electron rule
The 18-electron rule, also called the eighteen-electron rule, states that stable diamagnetic transition metal complexes have 18 valence electrons, a noble-gas analog of the octet rule.
18×2 Beyond Youthful Days
18×2 Beyond Youthful Days (青春18×2 君へと続く道) is a 2024 Japan-Taiwan romance film directed by Michihito Fujii, starring Greg Hsu and Kaya Kiyohara, adapted from Jimmy Lai's travelogue about a man revisiting his first love 18 years later.
180 Garumna
180 Garumna is a stony main-belt asteroid about 23 km across orbiting between Mars and Jupiter, discovered by the French astronomer Henri Joseph Perrotin in 1878.
180 Seguros
180 Seguros is a Brazilian technology insurer founded in São Paulo in 2020 by ex-Nubank executives Mauro Levi D'Ancona and Franco Lamping, selling embedded insurance through fintech and retail partners.
180-degree rule
The 180-degree rule (axis of action, the line) is a film continuity convention keeping the camera on one side of an imaginary line between subjects so screen direction and eyelines stay consistent; crossing the line reverses positions. Distinct from the 180-degree shutter rule.
1800
The year 1800: Adams occupies the White House, the Library of Congress is founded, Jefferson's disputed election begins, Napoleon wins Marengo, the Act of Union passes, and Volta invents the electric battery.
1800 United States presidential election
The 1800 U.S. presidential election, also called the Revolution of 1800: Thomas Jefferson defeated John Adams but tied running mate Aaron Burr at 73 electoral votes; the House chose Jefferson on the 36th ballot, prompting the 12th Amendment.
1800s (decade)
The 1800s decade (1800–1809), first decade of the 19th century: Napoleonic Wars and Continental Blockade, Louisiana Purchase, US and British slave-trade bans of 1807–1808, Volta's battery, and the births of Lincoln, Poe, and Braille.
1802 Vrancea earthquake
The 1802 Vrancea earthquake (Cutremurul din 1802), a deep shock of about magnitude 7.9, struck on 26 October 1802 and is the strongest earthquake known to have affected Romania.
1804 Haiti massacre
The 1804 Haiti massacre was the killing of most of Haiti's remaining white French population, ordered by Jean-Jacques Dessalines in early 1804 after Haiti declared independence from France.
1804 United States presidential election
The 1804 United States presidential election, also called the Election of 1804, was the first held under the Twelfth Amendment: Thomas Jefferson (Democratic-Republican) won reelection with 162 electoral votes to Federalist Charles C. Pinckney's 14, with George Clinton as vice president.
1804–05 United States House of Representatives elections
The 1804–05 United States House of Representatives elections chose members of the 9th Congress, held between April 1804 and August 1805 and won overwhelmingly by Jefferson's Democratic-Republicans.
1805 Molise earthquake
The 1805 Molise earthquake, also known as the Santa Ana earthquake, struck southern Italy on 26 July 1805 with magnitude about 6.6, killing at least 5,000 people and damaging over 200 towns.
1806 Jalisco earthquake
The 1806 Jalisco earthquake, known as the Temblor de la Encarnación, struck New Spain on 25 March 1806, collapsing the church at Zapotlán el Grande.
18060 Zarex
18060 Zarex (1999 XJ156) is a Jupiter Trojan asteroid discovered 8 December 1999 by LINEAR at Socorro; named for Chiron's grandson Zarex, stepfather of Anius; a = 5.1252 au, H = 11.15.