The temperature on December 18, 1912 was between 0.3 °C and 5.0 °C and averaged 3.5 °C. There was 9.9 mm of rain. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
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.
October 24 » First Balkan War: The Battle of Kumanovo concludes with the Serbian victory against 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: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I13431.php : accessed February 14, 2026), "Lucas Ignatius Dreyer (1888-????)".
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