The temperature on July 15, 1909 was between 13.0 °C and 21.4 °C and averaged 16.1 °C. There was 5.2 hours of sunshine (32%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 26 » Kinemacolor, the first successful color motion picture process, is first shown to the general public at the Palace Theatre in London.
March 10 » By signing the Anglo-Siamese Treaty of 1909, Thailand relinquishes its sovereignty over the Malay states of Kedah, Kelantan, Perlis and Terengganu, which become British protectorates.
March 31 » Serbia formally withdraws its opposition to Austro-Hungarian actions in the Bosnian Crisis.
April 27 » Sultan of Ottoman Empire Abdul Hamid II is overthrown, and is succeeded by his brother, Mehmed V.
June 26 » The Science Museum in London comes into existence as an independent entity.
September 23 » The novel Le Fantôme de l'Opéra (The Phantom of the Opera), by Gaston Leroux, is published as a serialization in Le Gaulois.
Day of marriage December 9, 1927
The temperature on December 9, 1927 was between -0.8 °C and 1.9 °C and averaged 1.0 °C. There was 0.2 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 27 » Ibn Saud takes the title of King of Nejd.
April 27 » Carabineros de Chile (Chilean national police force and gendarmerie) are created.
June 13 » Aviator Charles Lindbergh receives a ticker tape parade down 5th Avenue in New York City.
July 4 » First flight of the Lockheed Vega.
October 25 » The Italian luxury liner SS Principessa Mafalda sinks off the coast of Brazil, killing 314.
December 11 » Guangzhou Uprising: Communist Red Guards launch an uprising in Guangzhou, China, taking over most of the city and announcing the formation of a Guangzhou Soviet.
When copying data from this family tree, please include a reference to the origin: Jaap van Tuyll, "Descendants De Jonge", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-de-jonge/I44653.php : accessed February 5, 2026), "Geertruida Pieternella Heijstek (1909-)".
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