January 28 » Walter Arnold of East Peckham, Kent, becomes the first person to be convicted of speeding. He was fined one shilling, plus costs, for speeding at 8mph (13km/h), thereby exceeding the contemporary speed limit of 2mph (3.2km/h).
March 1 » Henri Becquerel discovers radioactive decay.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
September 21 » Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
Day of death April 11, 1968
The temperature on April 11, 1968 was between -0.9 °C and 8.6 °C and averaged 3.9 °C. There was 9.3 hours of sunshine (68%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 13 » Johnny Cash performs live at Folsom State Prison.
March 17 » As a result of nerve gas testing by the U.S. Army Chemical Corps in Skull Valley, Utah, over 6,000 sheep are found dead.
April 20 » English politician Enoch Powell makes his controversial "Rivers of Blood" speech.
August 28 » The police rioted during the Democratic National Convention, beating up anti-war protesters, peaceful demonstrators, innocent bystanders, and members of the press.
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 31 » The first flight of the Tupolev Tu-144, the first civilian supersonic transport in the world.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I132299.php : accessed October 24, 2026), "Halbe Zandstra (1896-1968)".
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