February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
February 27 » Second Boer War: In South Africa, British military leaders receive an unconditional notice of surrender from Boer General Piet Cronjé at the Battle of Paardeberg.
March 14 » The Gold Standard Act is ratified, placing the United States currency on the gold standard.
April 5 » Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B.
August 14 » The Eight-Nation Alliance occupies Beijing, China, in a campaign to end the bloody Boxer Rebellion in China.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of death September 5, 1900
The temperature on September 5, 1900 was about 12.5 °C. The airpressure was 77 cm mercury. The atmospheric humidity was 94%. Source: KNMI
February 23 » Second Boer War: During the Battle of the Tugela Heights, the first British attempt to take Hart's Hill fails.
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
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 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
July 19 » The first line of the Paris Métro opens for operation.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I67244.php : accessed February 16, 2026), "Petrus Keunen (1900-1900)".
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