The temperature on July 31, 1919 was between 10.8 °C and 18.5 °C and averaged 14.2 °C. There was 4.0 hours of sunshine (26%). The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. 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.
April 16 » Mohandas Gandhi organizes a day of "prayer and fasting" in response to the killing of Indian protesters in the Jallianwala Bagh massacre by the British colonial troops three days earlier.
May 4 » May Fourth Movement: Student demonstrations take place in Tiananmen Square in Beijing, China, protesting the Treaty of Versailles, which transferred Chinese territory to Japan.
May 27 » The NC-4 aircraft arrives in Lisbon after completing the first transatlantic flight.
September 11 » United States Marine Corps invades Honduras.
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: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I15530.php : accessed January 22, 2026), "Roelof Petrus Gerhardus Klopper (1844-1919)".
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