The temperature on May 1, 1912 was between 0.5 °C and 13.7 °C and averaged 7.3 °C. There was 8.5 hours of sunshine (57%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
January 17 » British polar explorer Captain Robert Falcon Scott reaches the South Pole, one month after Roald Amundsen.
January 23 » The International Opium Convention is signed at The Hague.
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
May 5 » Pravda, the "voice" of the Communist Party of the Soviet Union, begins publication in Saint Petersburg.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
December 8 » Leaders of the German Empire hold an Imperial War Council to discuss the possibility that war might break out.
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/I187431.php : accessed January 2, 2026), "Henricus Jan Mulder (1912-)".
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