Today in History, English
Today in History, English

38551April 4Event1969 – Dr. Denton Cooley implants the first temporary artificial heart.
38552April 4Event1973 – The World Trade Center in New York is officially dedicated.
38553April 4Event1973 – A Lockheed C-141 Starlifter, dubbed the Hanoi Taxi, makes the last flight of Operation Homecoming.
38554April 4Event1975 – Microsoft is founded as a partnership between Bill Gates and Paul Allen in Albuquerque, New Mexico
38555April 4Event1975 – Vietnam War: Operation Babylift: A United States Air Force Lockheed C-5A Galaxy transporting orphans, crashes near Saigon, South Vietnam shortly after takeoff killing 172 people.
38556April 4Event1976 – Prince Norodom Sihanouk resigns as leader of Cambodia and is placed under house arrest.
38557April 4Event1979 – Prime Minister Zulfikar Ali Bhutto of Pakistan is executed.
38558April 4Event1981 – The Islamic Republic of Iran Air Force mounts an attack on H-3 Airbase and destroys about 50 Iraqi aircraft.
38559April 4Event1983 – Space Shuttle Challenger makes its maiden voyage into space.
38560April 4Event1984 – President Ronald Reagan calls for an international ban on chemical weapons.
38561April 4Event1988 – Governor Evan Mecham of Arizona is convicted in his impeachment trial and removed from office.
38562April 4Event1991 – Senator John Heinz of Pennsylvania and six others are killed when a helicopter collides with their airplane over an elementary school in Merion, Pennsylvania.
38563April 4Event1991 – The current flag of Hong Kong is adopted for post-colonial Hong Kong during the Third Session of the Seventh National People's Congress.
38564April 4Event1994 – Marc Andreessen and Jim Clark found Netscape Communications Corporation under the name Mosaic Communications Corporation.
38565April 4Event1996 – Comet Hyakutake is imaged by the USA Asteroid Orbiter Near Earth Asteroid Rendezvous.
38566April 4Event2002 – The Angolan government and UNITA rebels sign a peace treaty ending the Angolan Civil War.
38567April 4Event2007 – Fifteen British Royal Navy personnel held in Iran are released by the Iranian President.
38568April 4Event2009 – Three police officers are shot and killed during a shootout in Pittsburgh, Pennsylvania.
38569April 4Event2013 – More than 70 people are killed in a building collapse in Thane, India.
38570April 4Birth188 – Caracalla, Roman emperor (d. 217)
38571April 4Birth1492 – Ambrosius Blarer, German-Swiss theologian and reformer (d. 1564)
38572April 4Birth1572 – William Strachey, English author (d. 1621)
38573April 4Birth1593 – Edward Nicholas, English soldier and politician, Secretary of State for the Southern Department (d. 1669)
38574April 4Birth1640 – Gaspar Sanz, Spanish guitarist, composer, and priest (d. 1710)
38575April 4Birth1646 – Antoine Galland, French orientalist and archaeologist (d. 1715)
38576April 4Birth1648 – Grinling Gibbons, Dutch-English sculptor (d. 1721)
38577April 4Birth1676 – Giuseppe Maria Orlandini, Italian composer (d. 1760)
38578April 4Birth1688 – Joseph-Nicolas Delisle, French astronomer and cartographer (d. 1768)
38579April 4Birth1718 – Benjamin Kennicott, English theologian and scholar (d. 1783)
38580April 4Birth1752 – Niccolò Antonio Zingarelli, Italian composer (d. 1837)

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