February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
July 27 » Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.
October 25 » The United Kingdom annexes the Transvaal.
November 7 » The People's Party is founded in Cuba.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death April 19, 1915
The temperature on April 19, 1915 was between -0.3 °C and 14.5 °C and averaged 7.6 °C. There was 11.4 hours of sunshine (81%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
February 12 » In Washington, D.C., the first stone of the Lincoln Memorial is put into place.
May 9 » World War I: Second Battle of Artois between German and French forces.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
September 5 » The pacifist Zimmerwald Conference begins.
September 30 » World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I494126.php : accessed May 23, 2024), "Arend Koster (1900-1915)".
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