The temperature on April 11, 1909 was between -2.0 °C and 18.3 °C and averaged 8.9 °C. There was 0.2 mm of rain. There was 10.0 hours of sunshine (74%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 16 » Ernest Shackleton's expedition finds the magnetic South Pole.
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
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.
August 19 » The first automobile race at the Indianapolis Motor Speedway.
September 7 » Eugène Lefebvre crashes a new French-built Wright biplane during a test flight at Juvisy, south of Paris, becoming the first aviator in the world to lose his life in a powered heavier-than-air craft.
When copying data from this family tree, please include a reference to the origin: Gert Esterhuizen, "Family tree Eric Esterhuizen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eric-esterhuizen/I6917.php : accessed February 24, 2026), "Gertruida Mari Margaretha PRETORIUS (1909-)".
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