January 23 » Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat.
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.
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.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
October 19 » Max Planck discovers Planck's law of black-body radiation.
November 7 » Second Boer War: Battle of Leliefontein, a battle during which the Royal Canadian Dragoons win three Victoria Crosses.
Christening day June 20, 1900
The temperature on June 20, 1900 was about 14.4 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 90%. Source: KNMI
February 27 » Fußball-Club Bayern München is founded.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
June 5 » Second Boer War: British soldiers take Pretoria.
August 14 » The Eight-Nation Alliance occupies Beijing, China, in a campaign to end the bloody Boxer Rebellion in China.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
November 7 » The People's Party is founded in Cuba.
When copying data from this family tree, please include a reference to the origin: Dave Aaron, "Carter-Aaron tree", database, Genealogy Online (https://www.genealogieonline.nl/carter-aaron-tree/I2695.php : accessed February 7, 2026), "Rowland Rollin (1900-1978)".
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