The temperature on June 10, 1921 was between 9.4 °C and 16.2 °C and averaged 12.3 °C. There was 6.3 mm of rain. There was 1.3 hours of sunshine (8%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
February 12 » Bolsheviks launch a revolt in Georgia as a preliminary to the Red Army invasion of Georgia.
March 21 » The New Economic Policy is implemented by the Bolshevik Party in response to the economic failure as a result of war communism.
March 31 » The Royal Australian Air Force is formed.
April 2 » The Autonomous Government of Khorasan, a military government encompassing the modern state of Iran, is established.
May 31 » The Tulsa race massacre kills at least 39, but other estimates of black fatalities vary from 55 to about 300.
Day of death August 12, 1968
The temperature on August 12, 1968 was between 11.4 °C and 20.6 °C and averaged 16.2 °C. There was 9.1 hours of sunshine (61%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
April 11 » Assassination attempt on Rudi Dutschke, leader of the German student movement.
July 20 » The first International Special Olympics Summer Games are held at Soldier Field in Chicago, with about 1,000 athletes with intellectual disabilities.
July 23 » The only successful hijacking of an El Al aircraft takes place when a Boeing 707 carrying ten crew and 38 passengers is taken over by three members of the Popular Front for the Liberation of Palestine. The aircraft was en route from Rome, to Lod, Israel.
July 26 » Vietnam War: South Vietnamese opposition leader Trương Đình Dzu is sentenced to five years hard labor for advocating the formation of a coalition government as a way to move toward an end to the war.
October 14 » Jim Hines becomes the first man ever to break the so-called "ten-second barrier" in the 100-meter sprint with a time of 9.95 seconds.
December 21 » Apollo program: Apollo 8 is launched from the Kennedy Space Center, placing its crew on a lunar trajectory for the first visit to another celestial body by humans.
When copying data from this family tree, please include a reference to the origin: Arjen Mets, "Family tree Me(t)s", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-mets/I33.php : accessed February 28, 2026), "Jan Groeneveld (1921-1968)".
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