The temperature on October 18, 1912 was between 2.7 °C and 12.9 °C and averaged 8.5 °C. There was 0.3 mm of rain. There was 5.8 hours of sunshine (55%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
June 4 » Massachusetts becomes the first state of the United States to set a minimum wage.
October 7 » The Helsinki Stock Exchange sees its first transaction.
October 18 » First Balkan War: King Peter I of Serbia issues a declaration "To the Serbian People", as his country joins the war.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
December 16 » First Balkan War: The Royal Hellenic Navy defeats the Ottoman Navy at the Battle of Elli.
When copying data from this family tree, please include a reference to the origin: David Allen Navorska, "Navorska tree", database, Genealogy Online (https://www.genealogieonline.nl/navorska-tree/I3347.php : accessed December 23, 2025), "Child 3 of Olvert & Meentje Rippentrop (-1912)".
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