The temperature on April 28, 1955 was between 6.8 °C and 19.4 °C and averaged 13.2 °C. There was 8.3 hours of sunshine (57%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 7 » Contralto Marian Anderson becomes the first person of color to perform at the Metropolitan Opera in Giuseppe Verdi's Un ballo in maschera.
May 25 » In the United States, a night-time F5 tornado strikes the small city of Udall, Kansas, killing 80 and injuring 273. It is the deadliest tornado to ever occur in the state and the 23rd deadliest in the U.S.
June 11 » Eighty-three spectators are killed and at least 100 are injured after an Austin-Healey and a Mercedes-Benz collide at the 24 Hours of Le Mans, the deadliest ever accident in motorsports.
July 9 » The Russell–Einstein Manifesto calls for a reduction of the risk of nuclear warfare.
July 15 » Eighteen Nobel laureates sign the Mainau Declaration against nuclear weapons, later co-signed by thirty-four others.
September 16 » A Zulu-class submarine becomes the first to launch a ballistic missile.
Day of marriage February 20, 1976
The temperature on February 20, 1976 was between 3.1 °C and 13.0 °C and averaged 6.8 °C. There was 3.6 hours of sunshine (35%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. 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 21 » Commercial service of Concorde begins with the London-Bahrain and Paris-Rio routes.
July 17 » East Timor is annexed, and becomes the 27th province of Indonesia.
July 28 » The Tangshan earthquake measuring between 7.8 and 8.2 moment magnitude flattens Tangshan in the People's Republic of China, killing 242,769 and injuring 164,851.
October 6 » Cubana de Aviación Flight 455 is destroyed by two bombs, placed on board by an anti-Castro militant group.
October 13 » The first electron micrograph of an Ebola virus is taken at the Centers for Disease Control and Prevention by Dr. F. A. Murphy.
October 20 » The ferry George Prince is struck by a ship while crossing the Mississippi River. Seventy-eight passengers and crew die, and only 18 people aboard the ferry survive.
When copying data from this family tree, please include a reference to the origin: Roel Oosting, "Family tree Oosting", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oosting/I687.php : accessed January 27, 2026), "Wilhelmien "Mien" Hijmans (1955-2019)".
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