April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
April 20 » Pierre and Marie Curie refine radium chloride.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Cadillac Motor Company is founded.
Day of death May 20, 1976
The temperature on May 20, 1976 was between 5.2 °C and 16.8 °C and averaged 11.0 °C. There was 3.0 mm of rain during 4.6 hours. There was 3.4 hours of sunshine (21%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 1 » A bomb explodes on board Middle East Airlines Flight 438 over Qaisumah, Saudi Arabia, killing all 81 people on board.
January 12 » The United Nations Security Council votes 11–1 to allow the Palestine Liberation Organization to participate in a Security Council debate (without voting rights).
February 4 » In Guatemala and Honduras an earthquake kills more than 22,000.
March 9 » Forty-two people die in the Cavalese cable car disaster, the worst cable-car accident to date.
April 13 » The United States Treasury Department reintroduces the two-dollar bill as a Federal Reserve Note on Thomas Jefferson's 233rd birthday as part of the United States Bicentennial celebration.
October 6 » Premier Hua Guofeng arrests the Gang of Four, ending the Cultural Revolution in China.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I113976.php : accessed February 20, 2026), "Hielkje Tamminga (1902-1976)".
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