February 6 » The Permanent Court of Arbitration, an international arbitration court at The Hague, is created when the Senate of the Netherlands ratifies an 1899 peace conference decree.
February 27 » Fußball-Club Bayern München is founded.
March 18 » AFC Ajax Amsterdam, The Netherlands's biggest and most successful football club, was founded.
May 26 » Thousand Days' War: The Colombian Conservative Party turns the tide of war in their favor with victory against the Colombian Liberal Party in the Battle of Palonegro.
September 8 » Galveston hurricane: A powerful hurricane hits Galveston, Texas killing about 8,000 people.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death May 14, 1900
The temperature on May 14, 1900 was about 10.2 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 48%. Source: KNMI
January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
March 24 » Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn.
July 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
August 16 » The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British. The battle had begun when a force of between 2,000 and 3,000 Boers had surrounded a force of 500 Australians, Rhodesians, Canadians and British soldiers at a supply dump at Brakfontein Drift.
October 25 » The United Kingdom annexes the Transvaal.
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/I208455.php : accessed October 14, 2026), "Aaltje Helmus (1900-1900)".
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