The temperature on January 1, 1912 was between 5.7 °C and 8.1 °C and averaged 6.9 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
January 23 » The International Opium Convention is signed at The Hague.
May 13 » The Royal Flying Corps, the forerunner of the Royal Air Force, is established in the United Kingdom.
June 4 » Massachusetts becomes the first state of the United States to set a minimum wage.
September 25 » Columbia University Graduate School of Journalism is founded in New York City.
October 7 » The Helsinki Stock Exchange sees its first transaction.
December 19 » William Van Schaick, captain of the steamship General Slocum which caught fire and killed over one thousand people, is pardoned by U.S. President William Howard Taft after 3⁄2 years in Sing Sing prison.
Day of marriage October 14, 1943
The temperature on October 14, 1943 was between 3.2 °C and 13.0 °C and averaged 7.6 °C. There was 0.3 mm of rain. There was 5.6 hours of sunshine (52%). The average windspeed was 1 Bft (weak wind) and was prevailing from the 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.
February 16 » World War II: In the early phases of the Third Battle of Kharkov, Red Army troops re-enter the city.
March 15 » World War II: Third Battle of Kharkov: The Germans retake the city of Kharkov from the Soviet armies in bitter street fighting.
April 13 » World War II: The discovery of mass graves of Polish prisoners of war killed by Soviet forces in the Katyń Forest Massacre is announced, causing a diplomatic rift between the Polish government-in-exile in London and the Soviet Union, which denies responsibility.
July 9 » World War II: The Allied invasion of Sicily soon causes the downfall of Mussolini and forces Hitler to break off the Battle of Kursk.
October 19 » The cargo vessel Sinfra is attacked by Allied aircraft at Crete and sunk. 2,098 Italian prisoners of war drown with it.
November 16 » World War II: American bombers strike a hydro-electric power facility and heavy water factory in German-controlled Vemork, Norway.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I170679.php : accessed February 12, 2026), "Johannes de Haan (1912-)".
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