The temperature on April 24, 1915 was between 5.1 °C and 10.7 °C and averaged 7.7 °C. There was 1.5 mm of rain. There was 0.5 hours of sunshine (3%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. 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 25 » Alexander Graham Bell inaugurates U.S. transcontinental telephone service, speaking from New York to Thomas Watson in San Francisco.
May 27 » HMS Princess Irene exploded and sank off Sheerness, Kent with the loss of 352 lives.
July 7 » Colombo Town Guard officer Henry Pedris is executed in British Ceylon for allegedly inciting persecution of Muslims.
July 16 » Henry James becomes a British citizen to highlight his commitment to Britain during the first World War.
July 28 » The United States begins a 19-year occupation of Haiti.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
Day of marriage May 18, 1938
The temperature on May 18, 1938 was between 7.2 °C and 11.4 °C and averaged 9.4 °C. There was 3.4 mm of rain during 6.5 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
June 7 » The Douglas DC-4E makes its first test flight.
June 11 » Second Sino-Japanese War: The Battle of Wuhan starts.
June 24 » Pieces of a meteorite land near Chicora, Pennsylvania. The meteorite is estimated to have weighed 450metric tons when it hit the Earth's atmosphere and exploded.
June 25 » Dr. Douglas Hyde is inaugurated as the first President of Ireland.
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
December 17 » Otto Hahn discovers the nuclear fission of the heavy element uranium, the scientific and technological basis of nuclear energy.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I5559.php : accessed February 7, 2026), "Gerrit Jan Jonker (1915-)".
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