The temperature on September 21, 1911 was between 6.0 °C and 15.7 °C and averaged 12.3 °C. There was 1.6 mm of rain. There was 3.1 hours of sunshine (25%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
September 29 » Italy declares war on the Ottoman Empire.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I71432.php : accessed January 22, 2026), "Jan du Prie (1911-)".
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