The temperature on May 9, 1961 was between 7.6 °C and 13.5 °C and averaged 10.6 °C. There was 5.6 mm of rain during 3.6 hours. There was 4.6 hours of sunshine (30%). The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
January 3 » The SL-1 nuclear reactor is destroyed by a steam explosion in the only reactor incident in the United States to cause immediate fatalities.
April 11 » The trial of Adolf Eichmann begins in Jerusalem.
June 16 » While on tour with the Kirov Ballet in Paris, Rudolf Nureyev defects from the Soviet Union.
August 15 » Border guard Conrad Schumann flees from East Germany while on duty guarding the construction of the Berlin Wall.
September 18 » U.N. Secretary-General Dag Hammarskjöld dies in an air crash while attempting to negotiate peace in the Katanga region of the Democratic Republic of the Congo.
October 20 » The Soviet Union performs the first armed test of a submarine-launched ballistic missile, launching an R-13 from a Golf-class submarine.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I279427.php : accessed February 1, 2026), "Antonius Wilbrordus den Ridder (1961-)".
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