The temperature on October 15, 1911 was between 8.2 °C and 11.2 °C and averaged 9.9 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 30 » The destroyer USSTerry makes the first airplane rescue at sea saving the life of Douglas McCurdy ten miles from Havana, Cuba.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
July 1 » Germany despatches the gunship SMSPanther to Morocco, sparking the Agadir Crisis.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
December 29 » Sun Yat-sen becomes the provisional President of the Republic of China; he formally takes office on January 1, 1912.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I134055.php : accessed December 29, 2025), "Petronella Berdina Johanna van Balveren (1911-)".
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