The temperature on July 18, 1960 was between 12.4 °C and 20.2 °C and averaged 16.1 °C. There was 0.7 mm of rain during 0.6 hours. There was 10.9 hours of sunshine (67%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 19 » Japan and the United States sign the US–Japan Mutual Security Treaty
May 22 » The Great Chilean earthquake, measuring 9.5 on the moment magnitude scale, hits southern Chile, becoming the most powerful earthquake ever recorded.
September 8 » In Huntsville, Alabama, US President Dwight D. Eisenhower formally dedicates the Marshall Space Flight Center (NASA had already activated the facility on July 1).
November 3 » The land that would become the Great Swamp National Wildlife Refuge was established by an Act of Congress after a year-long legal battle that pitted local residents against Port Authority of New York and New Jersey officials wishing to turn the Great Swamp into a major regional airport for jet aircraft.
December 14 » Convention against Discrimination in Education of UNESCO is adopted.
December 15 » Richard Pavlick is arrested for plotting to assassinate U.S. President-Elect John F. Kennedy.
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/I6429.php : accessed February 22, 2026), "Johannes Arnolduszn Ericus (± 1574-????)".
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