The temperature on May 23, 1915 was between 12.1 °C and 23.0 °C and averaged 17.3 °C. There was 13.8 hours of sunshine (86%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the 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 26 » The Rocky Mountain National Park is established by an act of the U.S. Congress.
March 27 » Typhoid Mary, the first healthy carrier of disease ever identified in the United States is put in quarantine for the second time, where she would remain for the rest of her life.
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 27 » HMS Princess Irene exploded and sank off Sheerness, Kent with the loss of 352 lives.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
October 12 » World War I: British nurse Edith Cavell is executed by a German firing squad for helping Allied soldiers escape from Belgium
Day of death November 28, 1918
The temperature on November 28, 1918 was between 2.5 °C and 6.5 °C and averaged 5.2 °C. There was 1.4 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-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.
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 27 » The National Council of Bessarabia proclaims union with the Kingdom of Romania.
April 20 » Manfred von Richthofen, a.k.a. The Red Baron, shoots down his 79th and 80th victims, his final victories before his death the following day.
May 16 » The Sedition Act of 1918 is passed by the U.S. Congress, making criticism of the government during wartime an imprisonable offense. It will be repealed less than two years later.
November 3 » Austria-Hungary enters into the Armistice of Villa Giusti with the Allies, and the Habsburg-ruled empire dissolves.
November 18 » Latvia declares its independence from Russia.
December 14 » The 1918 United Kingdom general election occurs, the first where women were permitted to vote.
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/I166277.php : accessed February 8, 2026), "Sietse Boersma (1915-1918)".
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