The temperature on June 11, 1912 was between 11.1 °C and 20.6 °C and averaged 16.3 °C. There was 10.5 hours of sunshine (63%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
March 6 » Italo-Turkish War: Italian forces become the first to use airships in war, as two dirigibles drop bombs on Turkish troops encamped at Janzur, from an altitude of 6,000 feet.
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
June 8 » Carl Laemmle incorporates Universal Pictures.
August 6 » The Bull Moose Party meets at the Chicago Coliseum.
December 6 » The Nefertiti Bust is discovered.
December 16 » First Balkan War: The Royal Hellenic Navy defeats the Ottoman Navy at the Battle of Elli.
Day of marriage April 16, 1936
The temperature on April 16, 1936 was between 3.0 °C and 9.2 °C and averaged 6.1 °C. There was 1.6 mm of rain during 3.7 hours. There was -0.1 hours of sunshine (0%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
April 5 » Tupelo–Gainesville tornado outbreak: An F5 tornado kills 233 in Tupelo, Mississippi.
April 27 » The United Auto Workers (UAW) gains autonomy from the American Federation of Labor.
June 26 » Initial flight of the Focke-Wulf Fw 61, the first practical helicopter.
October 1 » Spanish Civil War: The Central Committee of Antifascist Militias of Catalonia dissolves itself, handing control of Catalan defence militias over to the Generalitat.
October 9 » Boulder Dam (later Hoover Dam) begins to generate electricity and transmit it to Los Angeles.
October 26 » The first electric generator at Hoover Dam goes into full operation.
When copying data from this family tree, please include a reference to the origin: Wicher Dam, "Dambomen, negen verschillende stambomen DAM", database, Genealogy Online (https://www.genealogieonline.nl/dambomen/I14850.php : accessed January 6, 2026), "Nicolaas Arie Heilijgers (1912-)".
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