March 1 » Henri Becquerel discovers radioactive decay.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
June 4 » Henry Ford completes the Ford Quadricycle, his first gasoline-powered automobile, and gives it a successful test run.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
September 22 » Queen Victoria surpasses her grandfather King George III as the longest reigning monarch in British history.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
Day of marriage August 18, 1923
The temperature on August 18, 1923 was between 13.0 °C and 18.8 °C and averaged 15.1 °C. There was 15.8 mm of rain. There was 4.9 hours of sunshine (34%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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 16 » Howard Carter unseals the burial chamber of Pharaoh Tutankhamun.
March 3 » TIME magazine is published for the first time.
September 29 » The French Mandate for Syria and the Lebanon takes effect.
October 6 » The Turkish National Movement enters Constantinople.
October 22 » The royalist Leonardopoulos–Gargalidis coup d'état attempt fails in Greece, discrediting the monarchy and paving the way for the establishment of the Second Hellenic Republic.
October 31 » The first of 160 consecutive days of 100° Fahrenheit at Marble Bar, Western Australia.
When copying data from this family tree, please include a reference to the origin: Jan Hagen, "Family tree Hagen-Bouwmeester", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-hagen-bouwmeester/I17778.php : accessed June 25, 2024), "Jan Calkhoven (1896-????)".
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