The temperature on July 13, 1912 was between 19.2 °C and 29.8 °C and averaged 24.2 °C. There was 11.9 hours of sunshine (73%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
March 5 » Italo-Turkish War: Italian forces are the first to use airships for military purposes, employing them for reconnaissance behind Turkish lines.
May 4 » Italy occupies the Greek island of Rhodes.
May 13 » The Royal Flying Corps, the forerunner of the Royal Air Force, is established in the United Kingdom.
October 8 » The First Balkan War begins when Montenegro declares war against the Ottoman Empire.
November 5 » Woodrow Wilson is elected the 28th President of the United States, defeating incumbent William Howard Taft.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I3831.php : accessed March 15, 2026), "Hendrika de Graaf (1912-)".
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