The temperature on September 13, 1912 was between 5.3 °C and 16.5 °C and averaged 10.9 °C. There was 3.1 hours of sunshine (24%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
February 29 » The Piedra Movediza (Moving Stone) of Tandil falls and breaks.
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
October 7 » The Helsinki Stock Exchange sees its first transaction.
October 19 » Italo-Turkish War: Italy takes possession of what is now Libya from the Ottoman Empire.
November 2 » Bulgaria defeats the Ottoman Empire in the Battle of Lule Burgas, the bloodiest battle of the First Balkan War, which opens her way to Constantinople.
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I7089.php : accessed October 15, 2026), "JOHANNES VISSER (1912-)".
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