The temperature on July 6, 1917 was between 8.2 °C and 19.6 °C and averaged 14.5 °C. There was 11.2 hours of sunshine (68%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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 23 » First demonstrations in Saint Petersburg, Russia. The beginning of the February Revolution (March 8 in the Gregorian calendar).
May 26 » Several powerful tornadoes rip through Illinois, including the city of Mattoon.
July 27 » World War I: The Allies reach the Yser Canal at the Battle of Passchendaele.
October 13 » The "Miracle of the Sun" is witnessed by an estimated 70,000 people in the Cova da Iria in Portugal.
October 25 » Old Style date of the October Revolution in Russia.
November 26 » The National Hockey League is formed, with the Montreal Canadiens, Montreal Wanderers, Ottawa Senators, Quebec Bulldogs, and Toronto Arenas as its first teams.
When copying data from this family tree, please include a reference to the origin: Gerrit Potman, "Family tree Potman (Markelo)", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-potman/I6501.php : accessed February 28, 2026), "Levenloos geboren Ziggers (1917-1917)".
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