The temperature on October 20, 1911 was between 9.3 °C and 17.4 °C and averaged 13.0 °C. There was 1.3 mm of rain. There was 2.9 hours of sunshine (28%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
Day of death December 31, 1911
The temperature on December 31, 1911 was between 0.3 °C and 5.5 °C and averaged 3.4 °C. There was 0.1 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 3 » A gun battle in the East End of London left two dead and sparked a political row over the involvement of then-Home Secretary Winston Churchill.
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
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/I136046.php : accessed February 13, 2026), "Mootske van der Hoek (1911-1911)".
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