The temperature on May 23, 1936 was between 2.1 °C and 16.7 °C and averaged 10.3 °C. There was 8.0 hours of sunshine (50%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 15 » The first building to be completely covered in glass, built for the Owens-Illinois Glass Company, is completed in Toledo, Ohio.
May 28 » Alan Turing submits On Computable Numbers for publication.
July 11 » The Triborough Bridge in New York City is opened to traffic.
August 31 » Radio Prague, now the official international broadcasting station of the Czech Republic, goes on the air.
November 3 » Franklin D. Roosevelt is re-elected President of the United States.
December 10 » Abdication Crisis: Edward VIII signs the Instrument of Abdication.
Day of death April 20, 1958
The temperature on April 20, 1958 was between 7.4 °C and 15.9 °C and averaged 11.1 °C. There was 9.7 hours of sunshine (68%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 1 » European Economic Community is established.
February 21 » The CND symbol, aka peace symbol, commissioned by the Direct Action Committee in protest against the Atomic Weapons Research Establishment, is designed and completed by Gerald Holtom.
March 19 » The Monarch Underwear Company fire leaves 24 dead and 15 injured.
June 1 » Charles de Gaulle comes out of retirement to lead France by decree for six months.
August 18 » Vladimir Nabokov's controversial novel Lolita is published in the United States.
October 7 » The 1958 Pakistani coup d'état inaugurates a prolonged period of military rule.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I50488.php : accessed February 27, 2026), "Willem Groenhof (1915-1958)".
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