February 23 » Émile Zola is imprisoned in France after writing J'Accuse…!, a letter accusing the French government of antisemitism and wrongfully imprisoning Captain Alfred Dreyfus.
March 16 » In Melbourne the representatives of five colonies adopted a constitution, which would become the basis of the Commonwealth of Australia.
April 21 » Spanish–American War: The United States Navy begins a blockade of Cuban ports. When the U.S. Congress issued a declaration of war on April 25, it declared that a state of war had existed from this date.
April 25 » Spanish–American War: The United States declares war on Spain.
May 1 » Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.
June 17 » The United States Navy Hospital Corps is established.
Day of death June 20, 1968
The temperature on June 20, 1968 was between 10.8 °C and 18.1 °C and averaged 14.4 °C. There was 8.0 mm of rain during 1.3 hours. There was 0.1 hours of sunshine (1%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
January 24 » Vietnam War: The 1st Australian Task Force launches Operation Coburg against the North Vietnamese Army and Viet Cong during wider fighting around Long Bình and Biên Hòa.
May 25 » The Gateway Arch in St. Louis, Missouri, is dedicated.
August 1 » The coronation is held of Hassanal Bolkiah, the 29th Sultan of Brunei.
October 2 » Mexican President Gustavo Díaz Ordaz orders soldiers to suppress a demonstration of unarmed students, ten days before the start of the 1968 Summer Olympics.
October 5 » A Northern Ireland Civil Rights Association march in Derry is violently suppressed by police.
November 15 » The Cleveland Transit System becomes the first transit system in the western hemisphere to provide direct rapid transit service from a city's downtown to its major airport.
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/I239904.php : accessed March 6, 2026), "Cornelis Koenen (1898-1968)".
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