January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
March 1 » Henri Becquerel discovers radioactive decay.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
August 30 » Philippine Revolution: After Spanish victory in the Battle of San Juan del Monte, eight provinces in the Philippines are declared under martial law by the Spanish Governor-General Ramón Blanco y Erenas.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
Day of death March 30, 1943
The temperature on March 30, 1943 was between 8.2 °C and 13.2 °C and averaged 10.7 °C. There was 1.0 mm of rain during 2.5 hours. There was 0.4 hours of sunshine (3%). The average windspeed was 5 Bft (very strong 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 14 » World War II: Japan begins Operation Ke, the successful operation to evacuate its forces from Guadalcanal during the Guadalcanal Campaign.
April 16 » Albert Hofmann accidentally discovers the hallucinogenic effects of the research drug LSD. He intentionally takes the drug three days later on April 19.
June 25 » The Holocaust: Jews in the Częstochowa Ghetto in Poland stage an uprising against the Nazis.
July 25 » World War II: Benito Mussolini is forced out of office by the Grand Council of Fascism and is replaced by Pietro Badoglio.
August 17 » World War II: The U.S. Eighth Air Force suffers the loss of 60 bombers on the Schweinfurt–Regensburg mission.
October 21 » World War II: The Provisional Government of Free India is formally established in Japanese-occupied Singapore.
When copying data from this family tree, please include a reference to the origin: Cor Blommers, "Family tree Mijjer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-mijjer/I1698.php : accessed February 14, 2026), "Dirk Koning (1896-1943)".
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