The temperature on September 5, 1917 was between 9.0 °C and 21.8 °C and averaged 15.9 °C. There was 11.4 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. 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 5 » The current constitution of Mexico is adopted, establishing a federal republic with powers separated into independent executive, legislative, and judicial branches.
June 7 » World War I: Battle of Messines: Allied soldiers detonate a series of mines underneath German trenches at Messines Ridge, killing 10,000 German troops.
June 13 » World War I: The deadliest German air raid on London of the war is carried out by Gotha G.IV bombers and results in 162 deaths, including 46 children, and 432 injuries.
July 6 » World War I: Arabian troops led by T. E. Lawrence ("Lawrence of Arabia") and Auda ibu Tayi capture Aqaba from the Ottoman Empire during the Arab Revolt.
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
December 12 » Father Edward J. Flanagan founds Boys Town as a farm village for wayward boys.
Day of death March 12, 1919
The temperature on March 12, 1919 was between 7.1 °C and 14.6 °C and averaged 10.2 °C. There was 0.7 mm of rain. There was 1.7 hours of sunshine (15%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
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.
January 22 » Act Zluky is signed, unifying the Ukrainian People's Republic and the West Ukrainian National Republic.
February 6 » The five-day Seattle General Strike begins, as more than 65,000 workers in the city of Seattle, Washington, walk off the job.
April 10 » Mexican Revolution leader Emiliano Zapata is ambushed and shot dead by government forces in Morelos.
June 4 » Women's rights: The U.S. Congress approves the 19th Amendment to the United States Constitution, which guarantees suffrage to women, and sends it to the U.S. states for ratification.
September 18 » The Netherlands gives women the right to vote.
October 17 » RCA is incorporated as the Radio Corporation of America.
When copying data from this family tree, please include a reference to the origin: E. Hillebregt - Zuiderwijk, "Family tree Scheffer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-scheffer/I466.php : accessed October 19, 2026), "Jan Halfwerk (1917-1919)".
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