February 18 » Second Boer War: Imperial forces suffer their worst single-day loss of life on Bloody Sunday, the first day of the Battle of Paardeberg.
March 7 » The German liner SSKaiser Wilhelm der Grosse becomes the first ship to send wireless signals to shore.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
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.
July 19 » The first line of the Paris Métro opens for operation.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage April 27, 1926
The temperature on April 27, 1926 was between 7.0 °C and 11.8 °C and averaged 9.2 °C. There was 0.3 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 8 » Crown Prince Nguyễn Phúc Vĩnh Thuỵ ascends the throne to become the last monarch of Vietnam.
January 26 » The first demonstration of the television by John Logie Baird.
March 14 » The El Virilla train accident, Costa Rica, kills 248 people and wounds another 93 when a train falls off a bridge over the Río Virilla between Heredia and Tibás.
June 14 » Brazil leaves the League of Nations.
August 6 » Gertrude Ederle becomes the first woman to swim across the English Channel.
October 14 » The children's book Winnie-the-Pooh, by A. A. Milne, is first published.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I16615.php : accessed March 13, 2026), "Harm Poort (1900-)".
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