March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
March 18 » AFC Ajax Amsterdam, The Netherlands's biggest and most successful football club, was founded.
May 17 » Second Boer War: British troops relieve Mafeking.
June 21 » Boxer Rebellion. China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi.
July 9 » The Federation of Australia is given royal assent.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death April 3, 1909
The temperature on April 3, 1909 was between -3.7 °C and 6.0 °C and averaged 1.3 °C. There was 2.7 hours of sunshine (21%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 9 » Ernest Shackleton, leading the Nimrod Expedition to the South Pole, plants the British flag 97 nautical miles (180km; 112mi) from the South Pole, the farthest anyone had ever reached at that time.
January 16 » Ernest Shackleton's expedition finds the magnetic South Pole.
February 22 » The sixteen battleships of the Great White Fleet, led by USSConnecticut, return to the United States after a voyage around the world.
April 11 » The city of Tel Aviv is founded.
April 18 » Joan of Arc is beatified in Rome.
August 24 » Workers start pouring concrete for the Panama Canal.
When copying data from this family tree, please include a reference to the origin: Tjitze Koster, "Family tree Koster Twijslerheide e.o.", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koster/I3430.php : accessed January 29, 2026), "Atje Koster (1900-1909)".
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