The temperature on April 1, 1953 was between 4.0 °C and 11.2 °C and averaged 7.6 °C. There was 0.8 mm of rain during 1.5 hours. There was 0.1 hours of sunshine (1%). The heavily clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
January 3 » Frances P. Bolton and her son, Oliver from Ohio, become the first mother and son to serve simultaneously in the U.S. Congress.
January 5 » The play Waiting for Godot by Samuel Beckett receives its première in Paris.
February 3 » The Batepá massacre occurred in São Tomé when the colonial administration and Portuguese landowners unleashed a wave of violence against the native creoles known as forros.
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).
July 17 » The largest number of United States midshipman casualties in a single event results from an aircraft crash in Florida, killing 44.
August 10 » First Indochina War: The French Union withdraws its forces from Operation Camargue against the Viet Minh in central Vietnam.
When copying data from this family tree, please include a reference to the origin: Marieke Cooper, "Family tree Cooper, Kooper, Oostwal, Robert, Ooteman en Blokland", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-cooper/I506.php : accessed January 23, 2026), "Orsine Ursula Blokland (1950-1953)".
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