The temperature on March 31, 1910 was between -1.6 °C and 7.8 °C and averaged 2.7 °C. There was 11.1 hours of sunshine (86%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 15 » Construction ends on the Buffalo Bill Dam in Wyoming, United States, which was the highest dam in the world at the time, at 325ft (99m).
February 8 » The Boy Scouts of America is incorporated by William D. Boyce.
April 16 » The oldest existing indoor ice hockey arena still used for the sport in the 21st century, Boston Arena, opens for the first time.
July 15 » In his book Clinical Psychiatry, Emil Kraepelin gives a name to Alzheimer's disease, naming it after his colleague Alois Alzheimer.
July 16 » John Robertson Duigan makes the first flight of the Duigan pusher biplane, the first aircraft built in Australia.
October 5 » In a revolution in Portugal the monarchy is overthrown and a republic is declared.
Day of marriage May 23, 1935
The temperature on May 23, 1935 was between 9.6 °C and 15.8 °C and averaged 13.1 °C. There was 2.6 hours of sunshine (16%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the north-northeast. Source: KNMI
February 12 » USSMacon, one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks.
May 14 » The Constitution of the Philippines is ratified by a popular vote.
June 18 » Police in Vancouver, British Columbia, Canada, clash with striking longshoremen, resulting in a total of 60 injuries and 24 arrests.
July 1 » Regina, Saskatchewan police and Royal Canadian Mounted Police ambush strikers participating in the On-to-Ottawa Trek.
October 10 » In Greece, a coup d'état ends the Second Hellenic Republic.
October 20 » The Long March, a mammoth retreat undertaken by the armed forces of the Chinese Communist Party a year prior, ends.
Day of death June 17, 1999
The temperature on June 17, 1999 was between 10.8 °C and 24.2 °C and averaged 16.8 °C. There was -0.1 mm of rain. There was 7.9 hours of sunshine (47%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
April 19 » The German Bundestag returns to Berlin.
May 29 » Space Shuttle Discovery completes the first docking with the International Space Station.
August 26 » Russia begins the Second Chechen War in response to the Invasion of Dagestan by the Islamic International Peacekeeping Brigade.
October 12 » The World Population reaches 6 billion.
November 11 » The House of Lords Act is given Royal Assent, restricting membership of the British House of Lords by virtue of a hereditary peerage.
November 30 » British Aerospace and Marconi Electronic Systems merge to form BAE Systems, Europe's largest defense contractor and the fourth largest aerospace firm in the world.
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/I115521.php : accessed January 13, 2026), "Grietje de Boer (1910-1999)".
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