April 25 » Spanish–American War: The United States declares war on Spain.
June 10 » Spanish–American War: In the Battle of Guantánamo Bay, U.S. Marines begin the American invasion of Spanish-held Cuba.
June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
August 23 » The Southern Cross Expedition, the first British venture of the Heroic Age of Antarctic Exploration, departs from London.
August 29 » The Goodyear tire company is founded.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of death October 20, 1966
The temperature on October 20, 1966 was between 8.8 °C and 12.7 °C and averaged 10.5 °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 south. Source: KNMI
April 30 » The Church of Satan is formed in The Black House, San Francisco.
May 25 » Explorer program: Explorer 32 launches.
June 14 » The Vatican announces the abolition of the Index Librorum Prohibitorum ("index of prohibited books"), which was originally instituted in 1557.
September 30 » Bechuanaland declares its independence, and becomes the Republic of Botswana.
October 5 » A reactor at the Enrico Fermi Nuclear Generating Station near Detroit suffers a partial meltdown.
November 30 » Barbados becomes independent from the United Kingdom.
When copying data from this family tree, please include a reference to the origin: J. Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_jacobs/I1158.php : accessed January 21, 2026), "Hendrikus Emile Wilhelmus "Harrie" Hezemans (1898-1966)".
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