March 24 » Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn.
June 21 » Boxer Rebellion. China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
July 9 » The Federation of Australia is given royal assent.
September 8 » Galveston hurricane: A powerful hurricane hits Galveston, Texas killing about 8,000 people.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage May 21, 1931
The temperature on May 21, 1931 was between 7.4 °C and 18.3 °C and averaged 12.8 °C. There was 1.0 mm of rain during 0.6 hours. There was 8.7 hours of sunshine (55%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 5 » The British Raj: Gandhi–Irwin Pact is signed.
March 11 » Ready for Labour and Defence of the USSR, abbreviated as GTO, is introduced in the Soviet Union.
July 16 » Emperor Haile Selassie signs the first constitution of Ethiopia.
September 18 » The Mukden Incident gives Japan a pretext to invade and occupy Manchuria.
October 17 » Al Capone is convicted of income tax evasion.
November 22 » Al-Mina'a SC is founded in Iraq.
Day of death June 21, 1958
The temperature on June 21, 1958 was between 11.9 °C and 14.2 °C and averaged 13.0 °C. There was 14.2 mm of rain during 9.1 hours. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
May 30 » Memorial Day: The remains of two unidentified American servicemen, killed in action during World War II and the Korean War respectively, are buried at the Tomb of the Unknown Soldier in Arlington National Cemetery.
August 29 » United States Air Force Academy opens in Colorado Springs, Colorado.
October 1 » The National Advisory Committee for Aeronautics is replaced by NASA.
October 7 » The 1958 Pakistani coup d'état inaugurates a prolonged period of military rule.
November 28 » First successful flight of SM-65 Atlas; the first operational intercontinental ballistic missile (ICBM), developed by the United States and the first member of the Atlas rocket family.
December 5 » The Preston By-pass, the UK's first stretch of motorway, opens to traffic for the first time. (It is now part of the M6 and M55 motorways.)
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/I92947.php : accessed October 22, 2026), "Fokeltje de Boer (1900-1958)".
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