The temperature on May 17, 1911 was between 12.1 °C and 18.7 °C and averaged 15.0 °C. There was 8.1 hours of sunshine (51%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
August 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
September 18 » Russian Premier Pyotr Stolypin is shot at the Kiev Opera House.
October 5 » The Kowloon–Canton Railway commences service.
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I17877.php : accessed May 3, 2025), "Antoinetta Theodora Geerts (1911-)".
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