The temperature on April 30, 1953 was between 5.2 °C and 14.5 °C and averaged 10.4 °C. There was 1.0 hours of sunshine (7%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 31 » A North Sea flood causes over 1,800 deaths in the Netherlands and over 300 in the United Kingdom.
February 28 » James Watson and Francis Crick announce to friends that they have determined the chemical structure of DNA; the formal announcement takes place on April 25 following publication in April's Nature (pub. April 2).
June 19 » Cold War: Julius and Ethel Rosenberg are executed at Sing Sing, in New York.
August 22 » The penal colony on Devil's Island is permanently closed.
October 29 » BCPA Flight 304 DC-6 crashes near San Francisco.
October 30 » President Eisenhower approves the top-secret document NSC 162/2 concerning the maintenance of a strong nuclear deterrent force against the Soviet Union.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I34339.php : accessed March 4, 2026), "Paula Anna van Landschoot".
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