April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
April 14 » The Exposition Universelle begins.
June 20 » Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China.
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 27 » Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of death September 28, 1909
The temperature on September 28, 1909 was between 8.7 °C and 15.0 °C and averaged 11.8 °C. There was 4.0 mm of rain. There was 0.7 hours of sunshine (6%). The average windspeed was 1 Bft (weak wind) and was prevailing from the east-southeast. 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 25 » Richard Strauss's opera Elektra receives its debut performance at the Dresden State Opera.
April 27 » Sultan of Ottoman Empire Abdul Hamid II is overthrown, and is succeeded by his brother, Mehmed V.
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.
October 16 » William Howard Taft and Porfirio Díaz hold the first summit between a U.S. and a Mexican president. They narrowly escape assassination.
November 18 » Two United States warships are sent to Nicaragua after 500 revolutionaries (including two Americans) are executed by order of José Santos Zelaya.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I113432.php : accessed March 1, 2026), "Antje Kooistra (1900-1909)".
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