February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
February 16 » Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.
March 6 » Bayer registers "Aspirin" as a trademark.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
May 30 » Pearl Hart, a female outlaw of the Old West, robs a stage coach 30 miles southeast of Globe, Arizona.
July 29 » The First Hague Convention is signed.
Day of death April 1, 1980
The temperature on April 1, 1980 was between 6.1 °C and 12.8 °C and averaged 9.9 °C. There was 26.3 mm of rain during 11.4 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
March 21 » U.S. President Jimmy Carter announces a United States boycott of the 1980 Summer Olympics in Moscow to protest the Soviet–Afghan War.
March 23 » Archbishop Óscar Romero of El Salvador gives his famous speech appealing to men of the El Salvadoran armed forces to stop killing the Salvadorans.
March 27 » The Norwegian oil platform Alexander L. Kielland collapses in the North Sea, killing 123 of its crew of 212.
July 24 » The Quietly Confident Quartet of Australia wins the men's 4 x 100 metre medley relay at the Moscow Olympics, the only time the United States has not won the event at Olympic level.
September 26 » At the Oktoberfest terror attack in Munich 13 people die and 211 are injured.
December 11 » The Comprehensive Environmental Response, Compensation, and Liability Act (Superfund) is enacted by the U.S. Congress.
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/I80767.php : accessed October 5, 2026), "Rudmer Huisman (1899-1980)".
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