The temperature on August 17, 1968 was between 10.2 °C and 17.1 °C and averaged 13.8 °C. There was 5.8 mm of rain during 4.5 hours. There was 2.5 hours of sunshine (17%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
March 12 » Mauritius achieves independence from the United Kingdom.
April 6 » Pierre Elliott Trudeau wins the Liberal Leadership Election, and becomes Prime Minister of Canada soon after.
May 25 » The Gateway Arch in St. Louis, Missouri, is dedicated.
June 11 » Lloyd J. Old identified the first cell surface antigens that could differentiate among different cell types.
November 17 » Viewers of the Raiders–Jets football game in the eastern United States are denied the opportunity to watch its exciting finish when NBC broadcasts Heidi instead, prompting changes to sports broadcasting in the U.S.
December 9 » Douglas Engelbart gave what became known as "The Mother of All Demos", publicly debuting the computer mouse, hypertext, and the bit-mapped graphical user interface using the oN-Line System (NLS).
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P442.php : accessed December 28, 2025), "Marcus L Vanornam (1884-1968)".
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