The temperature on June 30, 1915 was between 12.2 °C and 20.2 °C and averaged 15.7 °C. There was 1.3 mm of rain. There was 2.6 hours of sunshine (16%). The average windspeed was 2 Bft (weak wind) and was prevailing from the 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.
January 17 » Russia defeats Ottoman Turkey in the Battle of Sarikamish during the Caucasus Campaign of World War I.
February 8 » D. W. Griffith's controversial film The Birth of a Nation premieres in Los Angeles.
April 22 » The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres.
May 6 » Babe Ruth, then a pitcher for the Boston Red Sox, hits his first major league home run.
July 16 » Henry James becomes a British citizen to highlight his commitment to Britain during the first World War.
September 30 » World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire.
Day of marriage June 20, 1940
The temperature on June 20, 1940 was between 10.8 °C and 22.7 °C and averaged 17.0 °C. There was 15.2 hours of sunshine (91%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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.
March 5 » Six high-ranking members of Soviet politburo, including Joseph Stalin, sign an order for the execution of 25,700 Polish intelligentsia, including 14,700 Polish POWs, in what will become known as the Katyn massacre.
May 14 » World War II: Rotterdam, Netherlands is bombed by the Luftwaffe of Nazi Germany despite a ceasefire, killing about 900 people and destroying the historic city center.
September 9 » George Stibitz pioneers the first remote operation of a computer.
September 9 » Treznea Massacre in Transylvania.
November 5 » World War II: The British armed merchant cruiser, HMSJervis Bay, is sunk by the German pocket battleship Admiral Scheer.
November 24 » World War II: The First Slovak Republic becomes a signatory to the Tripartite Pact, officially joining the Axis powers.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I119660.php : accessed October 19, 2026), "Geeske van der Heide (1915-)".
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