The temperature on June 30, 1937 was between 10.6 °C and 17.3 °C and averaged 13.7 °C. There was 2.8 mm of rain during 3.1 hours. There was 3.4 hours of sunshine (20%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
March 8 » Spanish Civil War: The Battle of Guadalajara begins.
May 28 » Volkswagen, the German automobile manufacturer is founded.
June 11 » Great Purge: The Soviet Union under Joseph Stalin executes eight army leaders.
August 1 » Josip Broz Tito reads the resolution "Manifesto of constitutional congress of KPH" to the constitutive congress of KPH (Croatian Communist Party) in woods near Samobor.
August 28 » Toyota Motors becomes an independent company.
November 8 » The Nazi exhibition Der ewige Jude ("The Eternal Jew") opens in Munich.
When copying data from this family tree, please include a reference to the origin: W.J. Oving, "Family tree Oving", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oving/I32923.php : accessed February 15, 2026), "Derk Jan KLEIN HESSELINK".
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