The temperature on September 7, 1911 was between 8.7 °C and 26.9 °C and averaged 16.9 °C. There was 10.4 hours of sunshine (78%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 30 » At the Indianapolis Motor Speedway, the first Indianapolis 500 ends with Ray Harroun in his Marmon Wasp becoming the first winner of the 500-mile auto race.
June 22 » George V and Mary of Teck are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
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 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: W.J. Oving, "Family tree Oving", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oving/I70379.php : accessed February 18, 2026), "Gradus van DREUMEL (-1911)".
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