The temperature on December 13, 1911 was between 0.1 °C and 5.4 °C and averaged 2.9 °C. There was 1.0 mm of rain. There was 1.7 hours of sunshine (22%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south east. 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.
January 21 » The first Monte Carlo Rally takes place.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
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.
December 29 » Mongolia gains independence from the Qing dynasty, enthroning 8th Jebtsundamba Khutughtu as Khagan of Mongolia.
When copying data from this family tree, please include a reference to the origin: Peter de Groot, "Family tree De Groot en Jansen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-groot-en-jansen/I6775.php : accessed May 29, 2024), "Antonia Johanna van der Horst (1911-)".
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