The temperature on January 9, 1920 was between 0.2 °C and 4.9 °C and averaged 2.2 °C. There was 1.7 mm of rain. There was 3.1 hours of sunshine (39%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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.
February 14 » The League of Women Voters is founded in Chicago.
March 12 » The Kapp Putsch begins when the Marinebrigade Ehrhardt is ordered to march on Berlin.
April 28 » Azerbaijan is added to the Soviet Union.
June 4 » Hungary loses 71% of its territory and 63% of its population when the Treaty of Trianon is signed in Paris.
August 16 » Polish–Soviet War: The Battle of Radzymin concludes; the Soviet Red Army is forced to turn away from Warsaw.
December 3 » Following more than a month of Turkish–Armenian War, the Turkish dictated Treaty of Alexandropol is concluded.
Day of marriage June 16, 1949
The temperature on June 16, 1949 was between 8.5 °C and 15.4 °C and averaged 11.3 °C. There was 3.3 hours of sunshine (20%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
February 14 » The Asbestos Strike begins in Canada. The strike marks the beginning of the Quiet Revolution in Quebec.
April 18 » The Republic of Ireland Act comes into effect.
July 20 » The Israel–Syria Mixed Armistice Commission brokers the last of four ceasefire agreements to end the 1948 Arab–Israeli War.
August 3 » The Basketball Association of America and the National Basketball League finalize the merger that would create the National Basketball Association.
September 21 » The People's Republic of China is proclaimed.
November 3 » Chinese Civil War: The Battle of Dengbu Island occurs.
Day of death December 18, 1973
The temperature on December 18, 1973 was between -0.1 °C and 4.7 °C and averaged 2.1 °C. There was 0.3 mm of rain during 0.1 hours. There was 2.7 hours of sunshine (35%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
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/I219135.php : accessed February 9, 2026), "Wybe Pietersma (1920-1973)".
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