April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
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 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
Day of marriage November 4, 1942
The temperature on November 4, 1942 was between 3.5 °C and 11.2 °C and averaged 7.1 °C. There was 0.2 mm of rain during 0.3 hours. There was 1.6 hours of sunshine (17%). The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. 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.
January 16 » Crash of TWA Flight 3, killing all 22 aboard, including film star Carole Lombard.
February 23 » World War II: Japanese submarines fire artillery shells at the coastline near Santa Barbara, California.
April 17 » French prisoner of war General Henri Giraud escapes from his castle prison in Königstein Fortress.
May 4 » World War II: The Battle of the Coral Sea begins with an attack by aircraft from the United States aircraft carrier USSYorktown on Japanese naval forces at Tulagi Island in the Solomon Islands. The Japanese forces had invaded Tulagi the day before.
August 6 » Queen Wilhelmina of the Netherlands becomes the first reigning queen to address a joint session of the United States Congress.
September 20 » The Holocaust in Ukraine: In the course of two days a German Einsatzgruppe murders at least 3,000 Jews in Letychiv.
Day of death March 31, 1943
The temperature on March 31, 1943 was between 8.1 °C and 11.1 °C and averaged 9.4 °C. There was 4.9 mm of rain during 4.9 hours. There was 2.1 hours of sunshine (16%). The average windspeed was 6 Bft (strong wind) and was prevailing from the west. 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.
January 15 » The Pentagon is dedicated in Arlington, Virginia.
January 18 » Warsaw Ghetto Uprising: The first uprising of Jews in the Warsaw Ghetto.
March 13 » German forces liquidate the Jewish ghetto in Kraków.
June 20 » World War II: The Royal Air Force launches Operation Bellicose, the first shuttle bombing raid of the war. Lancaster bombers damage the V-2 rocket production facilities at the Zeppelin Works while en route to an air base in Algeria.
June 25 » The Holocaust: Jews in the Częstochowa Ghetto in Poland stage an uprising against the Nazis.
December 4 » World War II: U.S. President Franklin D. Roosevelt closes down the Works Progress Administration, because of the high levels of wartime employment in the United States.
When copying data from this family tree, please include a reference to the origin: Rob Kap, "Family tree Kap", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kap/I368.php : accessed February 19, 2026), "Willem Cornelis van IJperen, (1897-1943)".
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