The temperature on September 27, 1915 was between 6.9 °C and 16.6 °C and averaged 11.6 °C. There was 0.9 mm of rain. There was 0.5 hours of sunshine (4%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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 12 » The United States House of Representatives rejects a proposal to require states to give women the right to vote.
January 26 » The Rocky Mountain National Park is established by an act of the U.S. Congress.
February 19 » World War I: The first naval attack on the Dardanelles begins when a strong Anglo-French task force bombards Ottoman artillery along the coast of Gallipoli.
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.
October 14 » World War I: Bulgaria joins the Central Powers.
Day of marriage December 15, 1939
The temperature on December 15, 1939 was between -1.9 °C and 0.8 °C and averaged -0.1 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. 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 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 2 » World War II: Following the start of the invasion of Poland the previous day, the Free City of Danzig (now Gdańsk, Poland) is annexed by Nazi Germany.
September 9 » Burmese national hero U Ottama dies in prison after a hunger strike to protest Britain's colonial government.
September 17 » World War II: German submarineU-29 sinks the British aircraft carrier HMSCourageous.
November 8 » Venlo Incident: Two British agents of SIS are captured by the Germans.
November 17 » Nine Czech students are executed as a response to anti-Nazi demonstrations prompted by the death of Jan Opletal. All Czech universities are shut down and more than 1,200 students sent to concentration camps. Since this event, International Students' Day is celebrated in many countries, especially in the Czech Republic.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I398229.php : accessed February 7, 2026), "Hendrik Hendriks (1915-< 2014)".
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