The temperature on March 20, 1915 was between -6.0 °C and 7.5 °C and averaged 1.6 °C. There was 0.5 mm of rain. There was 5.6 hours of sunshine (46%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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.
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.
August 4 » World War I: The German 12th Army occupies Warsaw during the Gorlice–Tarnów Offensive and the Great Retreat of 1915.
August 17 » A Category 4 hurricane hits Galveston, Texas with winds at 135 miles per hour (217km/h).
September 12 » French soldiers rescue over 4,000 Armenian Genocide survivors stranded on Musa Dagh.
October 14 » World War I: Bulgaria joins the Central Powers.
Day of marriage September 15, 1943
The temperature on September 15, 1943 was between 11.6 °C and 18.4 °C and averaged 15.3 °C. There was 0.1 mm of rain during 0.2 hours. There was 2.8 hours of sunshine (22%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 24 » World War II: Franklin D. Roosevelt and Winston Churchill conclude a conference in Casablanca.
February 9 » World War II: Allied authorities declare Guadalcanal secure after Imperial Japan evacuates its remaining forces from the island, ending the Battle of Guadalcanal.
March 3 » World War II: In London, 173 people are killed in a crush while trying to enter an air-raid shelter at Bethnal Green tube station.
August 1 » World War II: Operation Tidal Wave also known as "Black Sunday", was a failed American attempt to destroy Romanian oil fields.
October 17 » The Burma Railway (Burma–Thailand Railway) is completed.
December 28 » World War II: After eight days of brutal house-to-house fighting, the Battle of Ortona concludes with the victory of the 1st Canadian Infantry Division over the German 1st Parachute Division and the capture of the Italian town of Ortona.
When copying data from this family tree, please include a reference to the origin: Pieter van Dam, "Family tree van Dam", database, Genealogy Online (https://www.genealogieonline.nl/van-dam_stamboom/I86.php : accessed January 15, 2026), "Johanna "Jo" Post (1915-)".
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