The temperature on August 15, 1911 was between 14.3 °C and 20.7 °C and averaged 16.5 °C. There was 0.8 mm of rain. There was 3.2 hours of sunshine (22%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
January 26 » Glenn Curtiss flies the first successful American seaplane.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 9 » The works of Gabriele D'Annunzio are placed in the Index of Forbidden Books by the Vatican.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
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: Jan van der Wal, "Family tree Van der Wal", database, Genealogy Online (https://www.genealogieonline.nl/van-der-wal-stamboom/I36.php : accessed March 4, 2026), "Trijntje Smid (1911-)".
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