The temperature on June 16, 1960 was between 6.4 °C and 21.3 °C and averaged 15.0 °C. There was 0.2 mm of rain during 0.3 hours. There was 0.7 hours of sunshine (4%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
March 22 » Arthur Leonard Schawlow and Charles Hard Townes receive the first patent for a laser.
July 20 » The Polaris missile is successfully launched from a submarine, the USSGeorge Washington, for the first time.
August 15 » Republic of the Congo (Brazzaville) becomes independent from France.
September 14 » The Organization of Petroleum Exporting Countries (OPEC) is founded.
October 29 » In Louisville, Kentucky, Cassius Clay (who later takes the name Muhammad Ali) wins his first professional fight.
December 13 » While Emperor Haile Selassie of Ethiopia visits Brazil, his Imperial Bodyguard seizes the capital and proclaims him deposed and his son, Crown Prince Asfa Wossen, Emperor.
When copying data from this family tree, please include a reference to the origin: Leen Schaap, "Database Schaap", database, Genealogy Online (https://www.genealogieonline.nl/database-schaap/I6639.php : accessed January 2, 2026), "Willemientje van der Horst (1960-)".
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