February 6 » Spanish–American War: The Treaty of Paris, a peace treaty between the United States and Spain, is ratified by the United States Senate.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
June 12 » New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
November 29 » FC Barcelona is founded by Catalan, Spanish and Englishmen. It later develops into one of Spanish football's most iconic and strongest teams.
December 2 » Philippine–American War: The Battle of Tirad Pass, termed "The Filipino Thermopylae", is fought.
Day of death March 31, 1900
The temperature on March 31, 1900 was about 3.3 °C. The airpressure was 77 cm mercury. The atmospheric humidity was 71%. Source: KNMI
February 27 » The British Labour Party is founded.
May 23 » American Civil War: Sergeant William Harvey Carney is awarded the Medal of Honor for his heroism in the Assault on the Battery Wagner in 1863.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
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.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
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: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I134820.php : accessed February 15, 2026), "Hendericus Petrus van Oosten (1899-1900)".
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