The temperature on June 25, 1911 was between 10.5 °C and 19.1 °C and averaged 14.1 °C. There was 4.5 mm of rain. There was 9.5 hours of sunshine (57%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 26 » Glenn Curtiss flies the first successful American seaplane.
May 9 » The works of Gabriele D'Annunzio are placed in the Index of Forbidden Books by the Vatican.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
September 18 » Russian Premier Pyotr Stolypin is shot at the Kiev Opera House.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
Day of marriage April 20, 1939
The temperature on April 20, 1939 was between 1.7 °C and 17.7 °C and averaged 10.1 °C. There was 11.8 hours of sunshine (83%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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.
January 26 » Spanish Civil War: Catalonia Offensive: Troops loyal to nationalist General Francisco Franco and aided by Italy take Barcelona.
March 15 » Carpatho-Ukraine declares itself an independent republic, but is annexed by Hungary the next day.
May 23 » The U.S. Navy submarine USS Squalus sinks off the coast of New Hampshire during a test dive, causing the death of 24 sailors and two civilian technicians. The remaining 32 sailors and one civilian naval architect are rescued the following day.
September 3 » World War II: France, the United Kingdom, New Zealand and Australia declare war on Germany after the invasion of Poland, forming the Allies.
September 30 » World War II: General Władysław Sikorski becomes prime minister of the Polish government-in-exile.
October 14 » World War II: The German submarineU-47 sinks the British battleship HMSRoyal Oak within her harbour at Scapa Flow, Scotland.
Day of death November 14, 1962
The temperature on November 14, 1962 was between -3.0 °C and 3.4 °C and averaged 0.8 °C. There was 0.1 mm of rain. The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 10 » Apollo program: NASA announces plans to build the C-5 rocket launch vehicle, which became known as the Saturn V Moon rocket, which launched every Apollo Moon mission.
January 11 » Cold War: While tied to its pier in Polyarny, the Soviet submarine B-37 is destroyed when fire breaks out in its torpedo compartment.
June 7 » The Organisation Armée Secrète (OAS) sets fire to the University of Algiers library building, destroying about 500,000 books.
July 9 » Starfish Prime tests the effects of a nuclear test at orbital altitudes.
September 27 » Rachel Carson's book Silent Spring is published, inspiring an environmental movement and the creation of the U.S. Environmental Protection Agency.
November 4 » The United States concludes Operation Fishbowl, its final above-ground nuclear weapons testing series, in anticipation of the 1963 Partial Nuclear Test Ban Treaty.
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/I117055.php : accessed March 1, 2026), "Frans Klaver (1911-1962)".
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