The temperature on January 12, 1911 was between -0.4 °C and 2.0 °C and averaged 0.9 °C. There was 10.2 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
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.
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
July 1 » Germany despatches the gunship SMSPanther to Morocco, sparking the Agadir Crisis.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
September 29 » Italy declares war on the Ottoman Empire.
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: George Ingerman, "Stamboom Ingerman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ingerman/I981.php : accessed February 23, 2026), "Cornelia "Nel" Kuiperi (1911-)".
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