March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
July 26 » Ulises Heureaux, the 27th President of the Dominican Republic, is assassinated.
July 29 » The First Hague Convention is signed.
September 13 » Henry Bliss is the first person in the United States to be killed in an automobile accident.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
December 2 » Philippine–American War: The Battle of Tirad Pass, termed "The Filipino Thermopylae", is fought.
Day of death September 19, 1904
The temperature on September 19, 1904 was between 4.2 °C and 15.9 °C and averaged 10.1 °C. There was 11.2 hours of sunshine (90%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 17 » Anton Chekhov's The Cherry Orchard receives its premiere performance at the Moscow Art Theatre.
May 4 » The United States begins construction of the Panama Canal.
May 5 » Pitching against the Philadelphia Athletics at the Huntington Avenue Grounds, Cy Young of the Boston Americans throws the first perfect game in the modern era of baseball.
May 9 » The steam locomotive City of Truro becomes the first steam engine in Europe to exceed 100mph (160km/h).
August 23 » The automobile tire chain is patented.
December 3 » The Jovian moon Himalia is discovered by Charles Dillon Perrine at California's Lick Observatory.
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/I111414.php : accessed October 18, 2026), "Jan de Haan (1899-1904)".
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