The temperature on July 1, 1918 was between 5.1 °C and 22.6 °C and averaged 15.4 °C. There was 12.6 hours of sunshine (76%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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.
January 8 » U.S. President Woodrow Wilson announces his "Fourteen Points" for the aftermath of World War I.
March 31 » Daylight saving time goes into effect in the United States for the first time.
October 10 » RMS Leinster is torpedoed and sunk by UB-123, killing 564, the worst-ever on the Irish Sea.
October 31 » World War I: The Aster Revolution terminates the Austro-Hungarian Compromise of 1867, and Hungary achieves full sovereignty.
December 4 » U.S. President Woodrow Wilson sails for the World War I peace talks in Versailles, becoming the first US president to travel to Europe while in office.
December 14 » Portuguese President Sidónio Pais is assassinated.
Day of marriage April 11, 1940
The temperature on April 11, 1940 was between -0.4 °C and 8.2 °C and averaged 3.6 °C. There was 0.1 mm of rain. There was 2.9 hours of sunshine (21%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
May 5 » World War II: Norwegian Campaign: Norwegian squads in Hegra Fortress and Vinjesvingen capitulate to German forces after all other Norwegian forces in southern Norway had laid down their arms.
September 12 » An explosion at the Hercules Powder Company plant in Kenvil, New Jersey kills 51 people and injures over 200.
October 15 » President Lluís Companys of Catalonia is executed by the Francoist government.
November 5 » Franklin D. Roosevelt is the first and only President of the United States to be elected to a third term.
November 22 » World War II: Following the initial Italian invasion, Greek troops counterattack into Italian-occupied Albania and capture Korytsa.
November 23 » World War II: Romania becomes a signatory of the Tripartite Pact, officially joining the Axis powers.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I5497.php : accessed February 5, 2026), "Jacoba Jonker (1918-)".
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