The temperature on April 23, 1912 was between 5.8 °C and 19.1 °C and averaged 12.2 °C. There was 12.1 hours of sunshine (84%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 5 » The 6th All-Russian Conference of the Russian Social Democratic Labour Party (Prague Party Conference) opens. In the course of the conference, Vladimir Lenin and his supporters break from the rest of the party to form the Bolshevik movement.
March 5 » Italo-Turkish War: Italian forces are the first to use airships for military purposes, employing them for reconnaissance behind Turkish lines.
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
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.
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 December 7, 1937
The temperature on December 7, 1937 was between -1.6 °C and 1.2 °C and averaged 0.3 °C. There was 0.3 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I40355.php : accessed March 6, 2026), "Klaas Jan Brontsema (1912-)".
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