June 13 » Yukon Territory is formed, with Dawson chosen as its capital.
August 12 » The Hawaiian flag is lowered from ʻIolani Palace in an elaborate annexation ceremony and replaced with the flag of the United States to signify the transfer of sovereignty from the Republic of Hawaii to the United States.
August 23 » The Southern Cross Expedition, the first British venture of the Heroic Age of Antarctic Exploration, departs from London.
October 1 » The Vienna University of Economics and Business Administration is founded under the name k.u.k. Exportakademie.
November 5 » Negrese nationalists revolt against Spanish rule and establish the short-lived Republic of Negros.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of marriage May 4, 1923
The temperature on May 4, 1923 was between 8.3 °C and 24.9 °C and averaged 17.2 °C. There was 12.5 hours of sunshine (83%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 11 » Occupation of the Ruhr: Troops from France and Belgium occupy the Ruhr area to force Germany to make its World War I reparation payments.
February 10 » Texas Tech University is founded as Texas Technological College in Lubbock, Texas
February 16 » Howard Carter unseals the burial chamber of Pharaoh Tutankhamun.
June 18 » Checker Taxi puts its first taxi on the streets.
September 12 » Southern Rhodesia, today called Zimbabwe, is annexed by the United Kingdom.
October 22 » The royalist Leonardopoulos–Gargalidis coup d'état attempt fails in Greece, discrediting the monarchy and paving the way for the establishment of the Second Hellenic Republic.
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/I52391.php : accessed February 26, 2026), "Jan Kooi (1898-????)".
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