The temperature on May 31, 1917 was between 9.5 °C and 21.1 °C and averaged 15.1 °C. There was 9.9 hours of sunshine (60%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. 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.
February 24 » World War I: The U.S. ambassador Walter Hines Page to the United Kingdom is given the Zimmermann Telegram, in which Germany pledges to ensure the return of New Mexico, Texas, and Arizona to Mexico if Mexico declares war on the United States.
March 26 » World War I: First Battle of Gaza: British troops are halted after 17,000 Turks block their advance.
July 28 » The Silent Parade took place in New York City, in protest to murders, lynchings, and other violence directed towards African Americans.
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
October 25 » Old Style date of the October Revolution in Russia.
December 6 » Finland declares independence from Soviet Russia.
When copying data from this family tree, please include a reference to the origin: W.J. Oving, "Family tree Oving", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oving/I56652.php : accessed February 15, 2026), "Derk Willem SEINHORST".
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