The temperature on April 15, 1961 was between 3.9 °C and 16.9 °C and averaged 11.5 °C. There was 5.4 hours of sunshine (39%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
February 13 » An allegedly 500,000-year-old rock is discovered near Olancha, California, US, that appears to anachronistically encase a spark plug.
February 15 » Sabena Flight 548 crashes in Belgium, killing 73, including the entire United States figure skating team along with several of their coaches and family members.
May 9 » FCC Chairman Newton N. Minow gives his Wasteland Speech.
July 19 » Tunisia imposes a blockade on the French naval base at Bizerte; the French would capture the entire town four days later.
September 17 » The world's first retractable roof stadium, the Civic Arena, opens in Pittsburgh, Pennsylvania.
September 28 » A military coup in Damascus effectively ends the United Arab Republic, the union between Egypt and Syria.
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/I254020.php : accessed January 21, 2026), "Johannes Cornelis Marijnissen (± 1944-1961)".
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