The temperature on February 18, 1911 was between 7.7 °C and 9.9 °C and averaged 9.4 °C. The average windspeed was 6 Bft (strong wind) and was prevailing from the west-southwest. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
September 29 » Italy declares war on the Ottoman Empire.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
November 19 » The Doom Bar in Cornwall claimed two ships, Island Maid and Angele, the latter killing the entire crew except the captain.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
Day of marriage August 12, 1931
The temperature on August 12, 1931 was between 6.3 °C and 16.7 °C and averaged 13.1 °C. There was 0.2 mm of rain during 0.5 hours. There was 1.2 hours of sunshine (8%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 11 » Ready for Labour and Defence of the USSR, abbreviated as GTO, is introduced in the Soviet Union.
March 19 » Gambling is legalized in Nevada.
May 1 » The Empire State Building is dedicated in New York City.
June 23 » Wiley Post and Harold Gatty take off from Roosevelt Field, Long Island in an attempt to circumnavigate the world in a single-engine plane.
September 18 » The Mukden Incident gives Japan a pretext to invade and occupy Manchuria.
December 9 » The Constituent Cortes approves a constitution which establishes the Second Spanish Republic.
Day of death June 6, 1957
The temperature on June 6, 1957 was between 8.7 °C and 15.8 °C and averaged 12.6 °C. There was 6.9 hours of sunshine (42%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 11 » The African Convention is founded in Dakar, Senegal.
May 22 » South Africa's government approves of racial separation in universities.
August 28 » U.S. Senator Strom Thurmond begins a filibuster to prevent the Senate from voting on Civil Rights Act of 1957; he stopped speaking 24 hours and 18 minutes later, the longest filibuster ever conducted by a single Senator.
September 19 » Plumbbob Rainier becomes the first nuclear explosion to be entirely contained underground, producing no fallout.
September 24 » President Eisenhower sends the 101st Airborne Division to Little Rock, Arkansas, to enforce desegregation.
October 10 » U.S. President Eisenhower apologizes to Ghanaian finance minister Gbedemah after he is refused service in a Delaware restaurant.
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/I15219.php : accessed February 21, 2026), "Magdalena van Geffen (1911-1957)".
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