The temperature on February 23, 1911 was between 5.6 °C and 9.6 °C and averaged 7.6 °C. There was 4.0 mm of rain. There was 0.6 hours of sunshine (6%). The average windspeed was 6 Bft (strong wind) and was prevailing from the southwest. Source: KNMI
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 23 » The New York Public Library is dedicated.
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.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
When copying data from this family tree, please include a reference to the origin: M. Jacobs, "Ancestors Birgit Willaert", database, Genealogy Online (https://www.genealogieonline.nl/kwartierstaat-birgit-willaert/I12750.php : accessed August 8, 2025), "Nicolaas Oud (1887-????)".
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