April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
April 20 » Pierre and Marie Curie refine radium chloride.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
December 14 » The Commercial Pacific Cable Company lays the first Pacific telegraph cable, from San Francisco to Honolulu.
Day of marriage April 23, 1924
The temperature on April 23, 1924 was between -0.7 °C and 10.5 °C and averaged 5.9 °C. There was 0.2 mm of rain. There was 8.8 hours of sunshine (61%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 1 » Russia–United Kingdom relations are restored, over six years after the Communist revolution.
February 14 » The Computing-Tabulating-Recording Company changes its name to International Business Machines Corporation (IBM).
June 2 » U.S. President Calvin Coolidge signs the Indian Citizenship Act into law, granting citizenship to all Native Americans born within the territorial limits of the United States.
August 28 » The Georgian opposition stages the August Uprising against the Soviet Union.
December 19 » German serial killer Fritz Haarmann is sentenced to death for a series of murders.
December 20 » Adolf Hitler is released from Landsberg Prison.
Day of death April 8, 1928
The temperature on April 8, 1928 was between 5.1 °C and 15.1 °C and averaged 9.3 °C. There was 5.5 hours of sunshine (41%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
January 1 » Boris Bazhanov defects through Iran. He is the only assistant of Joseph Stalin's secretariat to have defected from the Eastern Bloc.
January 31 » Leon Trotsky is exiled to Alma-Ata.
April 12 » The Bremen, a German Junkers W 33 type aircraft, takes off for the first successful transatlantic aeroplane flight from east to west.
April 14 » The Bremen, a German Junkers W 33 type aircraft, reaches Greenly Island, Canada - the first successful transatlantic aeroplane flight from east to west.
October 22 » Phi Sigma Alpha fraternity is founded at the University of Puerto Rico.
November 22 » The premier performance of Ravel's Boléro takes place in Paris.
When copying data from this family tree, please include a reference to the origin: Wicher Dam, "Dambomen, negen verschillende stambomen DAM", database, Genealogy Online (https://www.genealogieonline.nl/dambomen/I11686.php : accessed March 3, 2026), "Willem Dam (1902-1928)".
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