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.
June 8 » Carl Laemmle incorporates Universal Pictures.
July 8 » Henrique Mitchell de Paiva Couceiro leads an unsuccessful royalist attack against the First Portuguese Republic in Chaves.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
November 19 » First Balkan War: The Serbian Army captures Bitola, ending the five-century-long Ottoman rule of Macedonia.
December 28 » The first municipally owned streetcars take to the streets in San Francisco.
Day of marriage December 1, 1937
The temperature on December 1, 1937 was between 2.5 °C and 7.4 °C and averaged 5.4 °C. There was 3.0 mm of rain during 4.2 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 23 » The trial of the anti-Soviet Trotskyist center sees seventeen mid-level Communists accused of sympathizing with Leon Trotsky and plotting to overthrow Joseph Stalin's regime.
February 21 » The League of Nations bans foreign national "volunteers" in the Spanish Civil War.
June 30 » The world's first emergency telephone number, 999, is introduced in London.
August 14 » The beginning of air-to-air combat of the Second Sino-Japanese War and World War II in general, when six Japanese bombers are shot down by Chinese fighters while raiding Chinese air bases.
September 10 » Nine nations attend the Nyon Conference to address international piracy in the Mediterranean Sea.
November 1 » Stalinists execute Pastor Paul Hamberg and seven members of Azerbaijan's Lutheran community.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I3429.php : accessed January 17, 2026), "Prosper van Oyen (1912-)".
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