The temperature on April 5, 1915 was between 5.3 °C and 10.9 °C and averaged 7.3 °C. There was 8.5 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. 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.
March 18 » World War I: During the Battle of Gallipoli, three battleships are sunk during a failed British and French naval attack on the Dardanelles.
March 20 » Albert Einstein publishes his general theory of relativity.
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.
April 25 » World War I: The Battle of Gallipoli begins: The invasion of the Turkish Gallipoli Peninsula by British, French, Indian, Newfoundland, Australian and New Zealand troops, begins with landings at Anzac Cove and Cape Helles.
June 21 » The U.S. Supreme Court hands down its decision in Guinn v. United States 238 US 347 1915, striking down Oklahoma grandfather clause legislation which had the effect of denying the right to vote to blacks.
August 29 » US Navy salvage divers raise F-4, the first U.S. submarine sunk in an accident.
When copying data from this family tree, please include a reference to the origin: Nico Willemse, "Gijsendopher family tree compiled by N.W.Willemse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gijsendopher/I19.php : accessed December 30, 2025), "Johanna Theodora Hendrika Heijmans (1915-)".
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