The temperature on April 17, 1919 was between 3.8 °C and 10.8 °C and averaged 7.2 °C. There was 0.7 mm of rain. There was 2.5 hours of sunshine (18%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
May 29 » Albert Einstein's theory of general relativity is tested (later confirmed) by Arthur Eddington and Andrew Claude de la Cherois Crommelin
June 15 » John Alcock and Arthur Brown complete the first nonstop transatlantic flight when they reach Clifden, County Galway, Ireland.
June 28 » The Treaty of Versailles is signed, ending the state of war between Germany and the Allies of World War I.
September 22 » The steel strike of 1919, led by the Amalgamated Association of Iron and Steel Workers, begins in Pennsylvania before spreading across the United States.
October 28 » The U.S. Congress passes the Volstead Act over President Wilson's veto, paving the way for Prohibition to begin the following January.
When copying data from this family tree, please include a reference to the origin: H. van Luijk, "Family tree Van Luijk", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-luijk/I7903.php : accessed February 17, 2026), "Hendrik de Koeijer (± 1884-????)".
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