The temperature on September 17, 1915 was between 14.6 °C and 21.3 °C and averaged 16.7 °C. There was 0.1 mm of rain. There was 0.2 hours of sunshine (2%). 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.
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.
March 26 » The Vancouver Millionaires win the 1915 Stanley Cup Finals, the first championship played between the Pacific Coast Hockey Association and the National Hockey Association.
May 24 » World War I: Italy declares war on Austria-Hungary, joining the conflict on the side of the Allies.
June 29 » The North Saskatchewan River flood of 1915 is the worst flood in Edmonton history.
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.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
Day of marriage November 27, 1937
The temperature on November 27, 1937 was between -1.0 °C and 8.2 °C and averaged 4.8 °C. There was 0.4 mm of rain during 0.3 hours. There was 4.5 hours of sunshine (54%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
January 15 » Spanish Civil War: Nationalists and Republican both withdraw after suffering heavy losses, ending the Second Battle of the Corunna Road.
February 11 » The Flint sit-down strike ends when General Motors recognizes the United Auto Workers trade union.
February 16 » Wallace H. Carothers receives a United States patent for nylon.
November 1 » Stalinists execute Pastor Paul Hamberg and seven members of Azerbaijan's Lutheran community.
December 11 » Second Italo-Ethiopian War: Italy leaves the League of Nations.
December 16 » Theodore Cole and Ralph Roe attempt to escape from the American federal prison on Alcatraz Island in San Francisco Bay; neither is ever seen again.
Day of death August 28, 1950
The temperature on August 28, 1950 was between 12.3 °C and 22.4 °C and averaged 17.6 °C. There was 0.1 mm of rain during 0.4 hours. There was 5.6 hours of sunshine (40%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
May 13 » The first round of the Formula One World Championship is held at Silverstone.
May 19 » A barge containing munitions destined for Pakistan explodes in the harbor at South Amboy, New Jersey, devastating the city.
July 20 » Cold War: In Philadelphia, Harry Gold pleads guilty to spying for the Soviet Union by passing secrets from atomic scientist Klaus Fuchs.
August 20 » Korean War: United Nations repel an offensive by North Korean divisions attempting to cross the Nakdong River and assault the city of Taegu.
September 15 » Korean War: The U.S. X Corps lands at Inchon.
November 19 » US General Dwight D. Eisenhower becomes Supreme Commander of NATO-Europe.
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/I486293.php : accessed January 24, 2026), "Berend Potse (1915-1950)".
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