522 BC Darius I of Persia kills Magian usurper Gaumâta, securing his hold as king of the Persian Empire
480 BC Battle of Salamis: The Greek fleet under Themistocles defeats the Persian fleet under Xerxes I
61 BC Pompey the Great celebrates his third triumph for victories over the pirates and the end of the Mithridatic Wars on his 45th birthday.
1608 Captain Christopher Newport arrives in Virginia, for the second time, with supplies from England for colonists
1650 Henry Robinson opens 1st marriage bureau (England)
1668 English expedition to Hudson Bay led by Frenchman Médard Chouart Des Groseilliers arrives at Nemiscau (Rupert) River aboard the Nonsuch (beginning of Hudson Bay Company)
1789 US War Department establishes a regular army
1829 The first units of the London Metropolitan Police, Bobbies, appear on the streets of the British capital, the city's 1st modern police force under Sir Robert Peel
1849 1st passenger train service to Peekskill, New York (New Haven Railroad)
1859 Great auroral display in US (Resulting from the Carrington Event solar flare)
1902 Impresario David Belasco opens his 1st Broadway theater
1904 1st monument honoring Spanish–American War erected, in Monroeville, Ohio
1907 Construction begins on Washington National Cathedral
1910 National Urban League founded as Committee on Urban Conditions Among Negroes by Ruth Standish Baldwin and Dr. George Edmund Haynes in New York City
1913 Shubert Theater, named after Sam S. Shubert, opens at 225 W 44th St NYC
1915 1st transcontinental radio telephone message sent by U.S. naval radio station at Arlington, Virginia. to naval radio station at Mare Island, San Francisco
1915 Hurricane claims 275 in Mississippi Delta
1916 American oil tycoon John D. Rockefeller becomes the world's first billionaire
1920 Joseph Horne Company in Pittsburgh sells radios for $10
1923 Steinhart Aquarium in Golden Gate Park opens to public
1927 Telephone service begins between US & Mexico
1927 Tornado strikes St Louis, Missouri, 85 die
1930 NYC College offers 1st course in radio advertising
1936 Radio used for 1st time for a presidential campaign
1940 1st US merchant ship "Booker T. Washington" commanded by a black captain (Hugh Mulzac), launched at Wilmington Delaware
1950 Telephone Answering Machine created by Bell Laboratories
1951 American astronomer Seth Barnes Nicholson discovers Ananke, 12th moon of Jupiter from Mount Wilson Observatory, Los Angeles County, California
1953 1st department store to sell insurance is Carson Pirie Scott in Chicago, Illinois
1959 Little Anthony & the Imperials record "Shimmy Shimmy Ko Ko Bop"
1966 The Chevrolet Camaro, originally named Panther, is introduced.
1967 International Monetary Fund reforms world monetary system
1975 WGPR-TV Detroit, 1st African/American owned station in US, began broadcasting
1982 Seven people died after taking Extra-Strength Tylenol capsules laced with cyanide. This led to the use of safety seals on most consumer products
1986 "Airwolf" TV Adventure; moves to USA
1988 26th NASA Space Shuttle Mission: Discovery 7 launches
1988 Union Station reopens in Washington, D.C.
1990 The YF-22, which would later become the F-22 Raptor, flies for the first time
1990 Washington National Cathedral construction is completed after 83 years
1994 House votes to end lobbyists buying meals & entertainment for Congress
1995 US space probe Ulyssus completes 2nd passage behind Sun
2001 The Syracuse Herald-Journal, a U.S. newspaper dating back to 1839, ceases publication
2008 Dow Jones Industrial Average falls 777.68 points, its largest single-day point loss, following the bankruptcies of Lehman Brothers and Washington Mutual
2020 Scientists confirm the existence of three new underground lakes on Mars using radar on Esa's Mars Express spacecraft
2021 U.S. Fish and Wildlife Service declares 23 species of bird, fish and other wildlife extinct, including the ivory-billed woodpecker