April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
December 6 » London becomes the world's first city to host licensed taxicabs.
Day of marriage February 14, 1923
The temperature on February 14, 1923 was between -6.9 °C and -0.2 °C and averaged -3.8 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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.
April 26 » The Duke of York weds Lady Elizabeth Bowes-Lyon at Westminster Abbey.
April 28 » Wembley Stadium is opened, named initially as the Empire Stadium.
May 26 » The first 24 Hours of Le Mans was held and has since been run annually in June.
June 9 » Bulgaria's military takes over the government in a coup.
September 12 » Southern Rhodesia, today called Zimbabwe, is annexed by the United Kingdom.
September 29 » The French Mandate for Syria and the Lebanon takes effect.
Day of death February 4, 1944
The temperature on February 4, 1944 was between -0.1 °C and 5.8 °C and averaged 3.7 °C. There was 4.2 mm of rain during 3.7 hours. There was 1.2 hours of sunshine (13%). The average windspeed was 6 Bft (strong wind) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
March 30 » World War II: Allied bombers conduct their most severe bombing run on Sofia, Bulgaria.
August 9 » The United States Forest Service and the Wartime Advertising Council release posters featuring Smokey Bear for the first time.
September 18 » World War II:Battle of Arracourt begins
October 21 » World War II: The first kamikaze attack damages HMASAustralia as the Battle of Leyte Gulf begins.
October 25 » Second World War: Heinrich Himmler orders a crackdown on the Edelweiss Pirates, a loosely organized youth culture in Nazi Germany that had assisted army deserters and others to hide from the Third Reich.
December 3 » Greek Civil War: Fighting breaks out in Athens between the ELAS and government forces supported by the British Army.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I40468.php : accessed December 27, 2025), "Jan van der Kaai (1897-1944)".
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