The temperature on December 13, 1914 was between 3.6 °C and 9.0 °C and averaged 6.5 °C. There was 3.7 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. 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.
April 24 » The Franck–Hertz experiment, a pillar of quantum mechanics, is presented to the German Physical Society.
August 9 » Start of the Battle of Mulhouse, part of a French attempt to recover the province of Alsace and the first French offensive of World War I.
August 14 » World War I: Start of the Battle of Lorraine, an unsuccessful French offensive designed to recover the lost province of Moselle from Germany.
August 25 » World War I: The library of the Catholic University of Leuven is deliberately destroyed by the German Army. Hundreds of thousands of irreplaceable volumes and Gothic and Renaissance manuscripts are lost.
September 16 » World War I: The Siege of Przemyśl (present-day Poland) begins.
November 2 » World War I: The Russian Empire declares war on the Ottoman Empire and the Dardanelles are subsequently closed.
Day of marriage May 20, 1937
The temperature on May 20, 1937 was between 12.2 °C and 22.5 °C and averaged 17.1 °C. There was 9.6 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
April 9 » The Kamikaze arrives at Croydon Airport in London. It is the first Japanese-built aircraft to fly to Europe.
April 26 » Spanish Civil War: Guernica, Spain, is bombed by German Luftwaffe.
June 30 » The world's first emergency telephone number, 999, is introduced in London.
July 6 » Spanish Civil War: Battle of Brunete: The battle begins with Spanish Republican troops going on the offensive against the Nationalists to relieve pressure on Madrid.
July 7 » The Marco Polo Bridge Incident provides the Imperial Japanese Army with a pretext for starting the Second Sino-Japanese War.
December 21 » Snow White and the Seven Dwarfs, the world's first full-length animated feature, premieres at the Carthay Circle Theatre.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I133104.php : accessed October 19, 2026), "Egbertje van der Sluis (1914-)".
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