The temperature on August 9, 1930 was between 12.0 °C and 19.3 °C and averaged 15.6 °C. There was 1.7 mm of rain during 0.5 hours. There was 3.6 hours of sunshine (24%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
June 17 » U.S. President Herbert Hoover signs the Smoot–Hawley Tariff Act into law.
August 29 » The last 36 remaining inhabitants of St Kilda are voluntarily evacuated to other parts of Scotland.
September 8 » 3M begins marketing Scotch transparent tape.
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
November 3 » Getúlio Vargas becomes Head of the Provisional Government in Brazil after a bloodless coup on October 24.
Day of death April 15, 1937
The temperature on April 15, 1937 was between 7.1 °C and 9.9 °C and averaged 8.5 °C. There was 1.0 mm of rain during 1.3 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
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/I17074.php : accessed January 20, 2026), "Willem Hendrik Frederick Groenewald (1905-1937)".
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