May 18 » Khodynka Tragedy: A mass panic on Khodynka Field in Moscow during the festivities of the coronation of Russian Tsar Nicholas II results in the deaths of 1,389 people.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
August 30 » Philippine Revolution: After Spanish victory in the Battle of San Juan del Monte, eight provinces in the Philippines are declared under martial law by the Spanish Governor-General Ramón Blanco y Erenas.
September 21 » Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
November 27 » Also sprach Zarathustra by Richard Strauss is first performed.
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 June 22, 1968
The temperature on June 22, 1968 was between 11.2 °C and 17.5 °C and averaged 14.8 °C. There was 0.9 hours of sunshine (5%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
March 7 » Vietnam War: The United States and South Vietnamese military begin Operation Truong Cong Dinh to root out Viet Cong forces from the area surrounding Mỹ Tho.
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.
July 20 » The first International Special Olympics Summer Games are held at Soldier Field in Chicago, with about 1,000 athletes with intellectual disabilities.
August 2 » An earthquake hits Casiguran, Aurora, Philippines killing more than 270 people and wounding 261.
September 30 » The Boeing 747 is rolled out and shown to the public for the first time.
December 26 » The Communist Party of the Philippines is established by Jose Maria Sison, breaking away from the Partido Komunista ng Pilipinas-1930.
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/I108689.php : accessed October 24, 2026), "Jelle van der Zwaag (1896-1968)".
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