The temperature on January 15, 1915 was between 7.9 °C and 9.0 °C and averaged 8.6 °C. There was 5.1 mm of rain. The average windspeed was 5 Bft (very strong 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 20 » Albert Einstein publishes his general theory of relativity.
May 1 » The RMSLusitania departs from New York City on her 202nd, and final, crossing of the North Atlantic. Six days later, the ship is torpedoed off the coast of Ireland with the loss of 1,198 lives.
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.
June 5 » Denmark amends its constitution to allow women's suffrage.
July 28 » The United States begins a 19-year occupation of Haiti.
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: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I269658.php : accessed January 17, 2026), "Wilhelmus van Opstal (1915-)".
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