The temperature on September 4, 1921 was between 2.9 °C and 20.0 °C and averaged 11.5 °C. There was 2.9 hours of sunshine (22%). The average windspeed was 2 Bft (weak wind) and was prevailing from the 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.
March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.
October 8 » KDKA in Pittsburgh's Forbes Field conducts the first live broadcast of a football game.
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
October 29 » The Harvard University football team loses to Centre College, ending a 25-game winning streak. This is considered one of the biggest upsets in college football.
Day of marriage October 18, 1946
The temperature on October 18, 1946 was between 4.3 °C and 13.3 °C and averaged 9.0 °C. There was 4.1 hours of sunshine (39%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
April 5 » A Fleet Air Arm Vickers Wellington crashes into a residential area in Rabat, Malta during a training exercise, killing all 4 crew members and 16 civilians on the ground.
May 21 » Physicist Louis Slotin is fatally irradiated in a criticality incident during an experiment with the demon core at Los Alamos National Laboratory.
July 5 » Micheline Bernardini models the first modern bikini at a swimming pool in Paris.
August 8 » First flight of the Convair B-36, the world's first mass-produced nuclear weapon delivery vehicle, the heaviest mass-produced piston-engined aircraft, with the longest wingspan of any military aircraft, and the first bomber with intercontinental range.
September 20 » The first Cannes Film Festival is held, having been delayed seven years due to World War II.
October 16 » Nuremberg trials: Ten defendants found guilty by the International Military Tribunal are executed by hanging.
Day of death January 4, 1971
The temperature on January 4, 1971 was between -8.5 °C and -4.2 °C and averaged -5.8 °C. There was -0.1 mm of rain. The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
February 9 » Satchel Paige becomes the first Negro League player to be voted into the USA's Baseball Hall of Fame.
April 10 » Ping-pong diplomacy: In an attempt to thaw relations with the United States, China hosts the U.S. table tennis team for a week-long visit.
May 1 » Amtrak (the National Railroad Passenger Corporation) takes over operation of U.S. passenger rail service.
August 9 » The Troubles: The British Army in Northern Ireland launches Operation Demetrius. Hundreds of people are arrested and interned, thousands are displaced, and twenty are killed in the violence that followed.
September 13 » Chairman Mao Zedong's second in command and successor Marshal Lin Biao flees the People's Republic of China after the failure of an alleged coup. His plane crashes in Mongolia, killing all aboard.
December 2 » Abu Dhabi, Ajman, Fujairah, Sharjah, Dubai, and Umm al-Quwain form the United Arab Emirates.
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/I171964.php : accessed October 3, 2026), "Pieter Wierstra (1921-1971)".
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