January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
August 22 » Cadillac Motor Company is founded.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of death April 23, 1980
The temperature on April 23, 1980 was between -1.0 °C and 10.9 °C and averaged 6.0 °C. There was -0.1 mm of rain. There was 7.3 hours of sunshine (51%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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 27 » The Norwegian oil platform Alexander L. Kielland collapses in the North Sea, killing 123 of its crew of 212.
March 31 » The Chicago, Rock Island and Pacific Railroad operates its final train after being ordered to liquidate its assets because of bankruptcy and debts owed to creditors.
April 30 » Beatrix is inaugurated as Queen of the Netherlands following the abdication of Juliana.
April 30 » The Iranian Embassy siege begins in London.
August 2 » A bomb explodes at the railway station in Bologna, Italy, killing 85 people and wounding more than 200.
September 18 » Soyuz 38 carries two cosmonauts (including one Cuban) to the Salyut 6 space station.
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/I112506.php : accessed October 14, 2026), "Eme Moltmaker (1902-1980)".
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