The temperature on March 11, 1960 was between 0.8 °C and 10.4 °C and averaged 5.0 °C. There was 0.1 mm of rain. The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 6 » National Airlines Flight 2511 is destroyed in mid-air by a bomb, while en route from New York City to Miami.
February 16 » The U.S. Navy submarine USSTriton begins Operation Sandblast, setting sail from New London, Connecticut, to begin the first submerged circumnavigation of the globe.
February 29 » The 5.7Mw Agadir earthquake shakes coastal Morocco with a maximum perceived intensity of X (Extreme), destroying Agadir, and leaving 12,000 dead and another 12,000 injured.
March 17 » U.S. President Dwight D. Eisenhower signs the National Security Council directive on the anti-Cuban covert action program that will ultimately lead to the Bay of Pigs Invasion.
November 11 » A military coup against President Ngô Đình Diệm of South Vietnam is crushed.
December 17 » Troops loyal to Emperor Haile Selassie in Ethiopia crush the coup that began December 13, returning power to their leader upon his return from Brazil. Haile Selassie absolves his son of any guilt.
When copying data from this family tree, please include a reference to the origin: N.P.P. Sies, "Family tree Sies", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-sies/I9986.php : accessed March 17, 2026), "Johannes Adrianus Wiggers (1891-1960)".
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