The temperature on December 11, 1912 was between 6.1 °C and 8.7 °C and averaged 7.3 °C. There was 0.5 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. 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.
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.
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
May 4 » Italy occupies the Greek island of Rhodes.
November 5 » Woodrow Wilson is elected the 28th President of the United States, defeating incumbent William Howard Taft.
When copying data from this family tree, please include a reference to the origin: L. Vlastra, "Family tree Vlastra", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-vlastra/I106978.php : accessed February 3, 2026), "Isaäc Plas (1892-????)".
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