The temperature on April 12, 1915 was between -1.6 °C and 10.8 °C and averaged 4.8 °C. There was 8.2 hours of sunshine (60%). The average windspeed was 2 Bft (weak wind) 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 18 » French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I.
May 7 » World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people, including 128 Americans. Public reaction to the sinking turns many former pro-Germans in the United States against the German Empire.
May 22 » Lassen Peak erupts with a powerful force, the only volcano besides Mount St. Helens to erupt in the contiguous U.S. during the 20th century.
August 29 » US Navy salvage divers raise F-4, the first U.S. submarine sunk in an accident.
October 14 » World War I: Bulgaria joins the Central Powers.
December 20 » World War I: The last Australian troops are evacuated from Gallipoli.
Day of marriage May 3, 1934
The temperature on May 3, 1934 was between 9.7 °C and 15.9 °C and averaged 12.4 °C. There was 3.7 mm of rain during 1.8 hours. There was 1.8 hours of sunshine (12%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 1 » A "Law for the Prevention of Genetically Diseased Offspring" comes into effect in Nazi Germany.
January 26 » German–Polish Non-Aggression Pact is signed.
February 6 » Far-right leagues rally in front of the Palais Bourbon in an attempted coup against the French Third Republic, creating a political crisis in France.
September 22 » The Gresford disaster in Wales kills 266 miners and rescuers.
October 16 » Chinese Communists begin the Long March to escape Nationalist encirclement.
December 29 » Japan renounces the Washington Naval Treaty of 1922 and the London Naval Treaty of 1930.
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/I119186.php : accessed February 14, 2026), "Jantje Bos (1915-)".
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