The temperature on February 14, 1912 was between 0.3 °C and 8.7 °C and averaged 4.5 °C. There was 0.1 mm of rain. There was 1.5 hours of sunshine (15%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 4 » The Scout Association is incorporated throughout the British Empire by royal charter.
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 14 » Former president Theodore Roosevelt is shot and mildly wounded by John Flammang Schrank. With the fresh wound in his chest, and the bullet still within it, Roosevelt delivers his scheduled speech.
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.
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 April 14, 1938
The temperature on April 14, 1938 was between 7.0 °C and 8.9 °C and averaged 7.6 °C. There was 1.0 mm of rain during 2.6 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
March 18 » Mexico creates Pemex by expropriating all foreign-owned oil reserves and facilities.
April 25 » U.S. Supreme Court delivers its opinion in Erie Railroad Co. v. Tompkins and overturns a century of federal common law.
July 3 » United States President Franklin D. Roosevelt dedicates the Eternal Light Peace Memorial and lights the eternal flame at Gettysburg Battlefield.
September 5 » Chile: A group of youths affiliated with the fascist National Socialist Movement of Chile are executed after surrendering during a failed coup.
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
December 13 » The Holocaust: The Neuengamme concentration camp opens in the Bergedorf district of Hamburg, Germany.
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/I93213.php : accessed October 20, 2026), "Johannes Dalstra (1912-)".
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