On This Day in History
Discover key historical events within the Genesis range (1950–2049) that occurred on this calendar day, and claim their commemorative registry plaques.
September 20
11 historical milestones registered between 1950 and 2049
Sweden, Norway, and Denmark submit the Greek case alleging human rights violations by the Greek junta.
Wikipedia: Greek caseL. Ron Hubbard, the founder of Scientology, announced the story of Xenu in a taped lecture sent to all Scientologists.
Wikipedia: L. Ron HubbardHurricane Irene (satellite image pictured) moved into the Pacific Ocean from the Atlantic, making it the first actively tracked tropical cyclone to do so.
Wikipedia: Hurricane Irene–Olivia
Billie Jean King defeated Bobby Riggs in straight sets at the Astrodome in Houston, Texas, in an internationally televised tennis match dubbed the "Battle of the Sexes".
Wikipedia: Billie Jean KingA series of celestial phenomena of disputed nature was observed in the western Soviet Union, Finland and Denmark.
Wikipedia: Petrozavodsk phenomenon
The Cosby Show, which became one of three U.S. television shows to have the highest ratings five years in a row, premiered with its pilot episode.
Wikipedia: The Cosby ShowBritish prime minister Margaret Thatcher (pictured) gave a landmark speech at the Belfry of Bruges, Belgium, against federalism in the European Economic Community.
Wikipedia: Margaret ThatcherHurricane Erika, the strongest and longest-lasting hurricane of the 1997 Atlantic hurricane season, dissipated after causing flooding and power outages throughout Puerto Rico.
Wikipedia: 1997 Atlantic hurricane seasonThe Real Irish Republican Army carried out a rocket-launcher attack on the MI6 headquarters in London, with no casualties and minimal damage recorded.
Wikipedia: Real Irish Republican ArmyAn explosive-laden truck detonated in front of the Marriott hotel in Islamabad, Pakistan, killing 54 people and injuring 266 others.
Wikipedia: Islamabad Marriott Hotel bombingThe United States military ended its "don't ask, don't tell" policy, consequently allowing gay and lesbian people to serve openly.
Wikipedia: Don't ask, don't tell