The temperature on July 27, 1914 was between 9.8 °C and 15.6 °C and averaged 12.3 °C. There was 3.5 mm of rain. There was 1.4 hours of sunshine (9%). The average windspeed was 3 Bft (moderate breeze) 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.
August 3 » World War I: Germany declares war against France, while Romania declares its neutrality.
September 3 » French composer Albéric Magnard is killed defending his estate against invading German soldiers.
September 9 » World War I: The creation of the Canadian Automobile Machine Gun Brigade, the first fully mechanized unit in the British Army.
December 8 » World War I: A squadron of Britain's Royal Navy defeats the Imperial German East Asia Squadron in the Battle of the Falkland Islands in the South Atlantic.
December 15 » A gas explosion at Mitsubishi Hōjō coal mine, in Kyushu, Japan, kills 687.
December 16 » World War I: Admiral Franz von Hipper commands a raid on Scarborough, Hartlepool and Whitby.
Day of marriage February 15, 1939
The temperature on February 15, 1939 was between 4.4 °C and 7.5 °C and averaged 5.8 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
August 2 » Albert Einstein and Leo Szilard write a letter to Franklin D. Roosevelt, urging him to begin the Manhattan Project to develop a nuclear weapon.
August 25 » The United Kingdom and Poland form a military alliance in which the UK promises to defend Poland in case of invasion by a foreign power.
September 1 » General George C. Marshall becomes Chief of Staff of the United States Army.
October 8 » World War II: Germany annexes western Poland.
November 15 » In Washington, D.C., US President Franklin D. Roosevelt lays the cornerstone of the Jefferson Memorial.
November 23 » World War II: HMSRawalpindi is sunk by the German battleships Scharnhorst and Gneisenau.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I8030.php : accessed January 29, 2026), "Geertje Hendrika van Geffen (1914-)".
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