January 23 » The Malolos Constitution is inaugurated, establishing the First Philippine Republic. Emilio Aguinaldo is sworn in as its first President.
February 22 » Filipino forces led by General Antonio Luna launch counterattacks for the first time against the American forces during the Philippine–American War. The Filipinos fail to regain Manila from the Americans.
July 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
July 29 » The First Hague Convention is signed.
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 May 25, 1899
The temperature on May 25, 1899 was about 10.5 °C. The airpressure was 75 cm mercury. The atmospheric humidity was 98%. Source: KNMI
February 16 » Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.
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 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
July 29 » The First Hague Convention is signed.
November 2 » The Boers begin their 118-day siege of British-held Ladysmith during the Second Boer War.
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/I79509.php : accessed October 13, 2026), "Jan de Haan (1899-1899)".
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