The temperature on September 29, 1912 was between 7.6 °C and 11.7 °C and averaged 9.9 °C. There was 4.3 mm of rain. There was 0.2 hours of sunshine (2%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 6 » New Mexico is admitted to the Union as the 47th U.S. state.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
February 25 » Marie-Adélaïde, the eldest of six daughters of Guillaume IV, becomes the first reigning Grand Duchess of Luxembourg.
June 8 » Carl Laemmle incorporates Universal Pictures.
October 8 » The First Balkan War begins when Montenegro declares war against the Ottoman Empire.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
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/I119784.php : accessed December 27, 2025), "Grietje Boersma (1912-)".
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