The temperature on May 13, 1909 was between 1.6 °C and 12.1 °C and averaged 6.9 °C. There was 10.7 hours of sunshine (69%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
March 31 » Serbia formally withdraws its opposition to Austro-Hungarian actions in the Bosnian Crisis.
April 9 » The U.S. Congress passes the Payne–Aldrich Tariff Act.
April 11 » The city of Tel Aviv is founded.
July 25 » Louis Blériot makes the first flight across the English Channel in a heavier-than-air machine from Calais to Dover, England, United Kingdom in 37 minutes.
August 24 » Workers start pouring concrete for the Panama Canal.
Day of marriage August 8, 1929
The temperature on August 8, 1929 was between 10.5 °C and 21.2 °C and averaged 15.4 °C. There was 6.3 mm of rain. There was 3.5 hours of sunshine (23%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from March 8, 1926 to August 10, 1929 the cabinet De Geer I, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 6 » Mother Teresa arrives by sea in Calcutta, India, to begin her work among India's poorest and sick people.
January 20 » The first full-length talking motion picture filmed outdoors, In Old Arizona, is released.
July 24 » The Kellogg–Briand Pact, renouncing war as an instrument of foreign policy, goes into effect (it is first signed in Paris on August 27, 1928, by most leading world powers).
August 8 » The German airship Graf Zeppelin begins a round-the-world flight.
October 3 » The Kingdom of Serbs, Croats and Slovenes is renamed to Yugoslavia by King Alexander I.
October 18 » The Judicial Committee of the Privy Council overrules the Supreme Court of Canada in Edwards v. Canada when it declares that women are considered "Persons" under Canadian law.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I34016.php : accessed February 17, 2026), "Petronella Jonker (1909-)".
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