The temperature on September 10, 1911 was between 8.1 °C and 21.0 °C and averaged 14.9 °C. There was 10.4 hours of sunshine (80%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
December 9 » A mine explosion near Briceville, Tennessee, kills 84 miners despite rescue efforts led by the United States Bureau of Mines.
When copying data from this family tree, please include a reference to the origin: Nico de Kunder, "Family tree De Kunder", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-kunder/I1568.php : accessed December 30, 2025), "Leijntje Dana de Koster (1911-)".
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