The temperature on July 30, 1912 was between 12.6 °C and 19.3 °C and averaged 15.4 °C. There was 0.8 mm of rain. There was 3.8 hours of sunshine (24%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
May 18 » The first Indian film, Shree Pundalik by Dadasaheb Torne, is released in Mumbai.
October 26 » First Balkan War: The Ottomans lose the cities of Thessaloniki and Skopje.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
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/I166483.php : accessed October 8, 2026), "Gerlof de Jong (1912-)".
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