The temperature on April 19, 1915 was between -0.6 °C and 13.9 °C and averaged 7.6 °C. There was 11.4 hours of sunshine (81%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 19 » Georges Claude patents the neon discharge tube for use in advertising.
May 9 » World War I: Second Battle of Artois between German and French forces.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
August 4 » World War I: The German 12th Army occupies Warsaw during the Gorlice–Tarnów Offensive and the Great Retreat of 1915.
August 27 » Attempted assassination of Bishop Patrick Heffron, bishop of the Diocese of Winona by Rev. Louis M. Lesches.
August 29 » US Navy salvage divers raise F-4, the first U.S. submarine sunk in an accident.
Day of marriage September 20, 1940
The temperature on September 20, 1940 was between 11.2 °C and 17.3 °C and averaged 14.2 °C. There was 11.5 mm of rain during 6.2 hours. There was 5.2 hours of sunshine (42%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 10 » Cartoon characters Tom and Jerry make their debut with Puss Gets the Boot.
May 7 » World War II: The Norway Debate in the British House of Commons begins, and leads to the replacement of Prime Minister Neville Chamberlain with Winston Churchill three days later.
June 18 » Appeal of 18 June by Charles de Gaulle.
September 14 » Ip massacre: The Hungarian Army, supported by local Hungarians, kill 158 Romanian civilians in Ip, Sălaj, a village in Northern Transylvania, an act of ethnic cleansing.
September 29 » Two Avro Ansons collide in mid-air over New South Wales, Australia, remain locked together, then land safely.
November 12 » World War II: The Battle of Gabon ends as Free French Forces take Libreville, Gabon, and all of French Equatorial Africa from Vichy French forces.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I36043.php : accessed January 26, 2026), "Hendrik Jacobus Spiering (1915-)".
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