The temperature on October 29, 1912 was between 9.0 °C and 14.6 °C and averaged 12.2 °C. There was 1.8 mm of rain. There was 0.9 hours of sunshine (9%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
January 8 » The African National Congress is founded, under the name South African Native National Congress (SANNC).
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 13 » The Royal Flying Corps, the forerunner of the Royal Air Force, is established in the United Kingdom.
October 24 » First Balkan War: The Battle of Kumanovo concludes with the Serbian victory against the Ottoman Empire.
Day of marriage April 25, 1935
The temperature on April 25, 1935 was between 7.8 °C and 16.8 °C and averaged 11.3 °C. There was 3.4 mm of rain during 3.2 hours. There was 6.6 hours of sunshine (46%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
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/I200295.php : accessed October 17, 2026), "Koopke de Boer (1912-)".
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