April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage July 24, 1922
The temperature on July 24, 1922 was between 10.2 °C and 17.1 °C and averaged 13.4 °C. There was 1.5 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-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.
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
April 7 » The United States Secretary of the Interior leases federal petroleum reserves to private oil companies on excessively generous terms.
May 19 » The Young Pioneer Organization of the Soviet Union is established.
November 26 » The Toll of the Sea debuts as the first general release film to use two-tone Technicolor. (The Gulf Between was the first film to do so, but it was not widely distributed.)
December 6 » One year to the day after the signing of the Anglo-Irish Treaty, the Irish Free State comes into existence.
December 7 » The Parliament of Northern Ireland votes to remain a part of the United Kingdom and not unify with Southern Ireland.
December 16 » President of Poland Gabriel Narutowicz is assassinated by Eligiusz Niewiadomski at the Zachęta Gallery in Warsaw.
Day of death December 3, 1969
The temperature on December 3, 1969 was between 2.2 °C and 7.4 °C and averaged 4.9 °C. There was 3.4 mm of rain during 5.6 hours. The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
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/I173475.php : accessed October 25, 2026), "Willem Pettinga (1897-1969)".
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