The temperature on January 16, 1912 was between -4.2 °C and -0.3 °C and averaged -2.4 °C. There was 2.4 hours of sunshine (29%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
May 18 » The first Indian film, Shree Pundalik by Dadasaheb Torne, is released in Mumbai.
October 7 » The Helsinki Stock Exchange sees its first transaction.
October 24 » First Balkan War: The Battle of Kirk Kilisse concludes with a Bulgarian victory against the Ottoman Empire.
December 3 » Bulgaria, Greece, Montenegro, and Serbia (the Balkan League) sign an armistice with the Ottoman Empire, temporarily halting the First Balkan War. (The armistice will expire on February 3, 1913, and hostilities will resume.)
Day of marriage June 8, 1938
The temperature on June 8, 1938 was between 12.5 °C and 27.5 °C and averaged 18.8 °C. There was 12.3 mm of rain during 3.5 hours. There was 6.5 hours of sunshine (39%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I7525.php : accessed February 3, 2026), "Jan Jellesma (1912-)".
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