The temperature on December 2, 1889 was about -5.8 °C. The air pressure was 4 kgf/m2 and came mainly from the east-southeast. The airpressure was 78 cm mercury. The atmospheric humidity was 93%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
May 2 » Menelik II, Emperor of Ethiopia, signs the Treaty of Wuchale, giving Italy control over Eritrea.
May 6 » The Eiffel Tower is officially opened to the public at the Universal Exposition in Paris.
June 3 » The first long-distance electric power transmission line in the United States is completed, running 14 miles (23km) between a generator at Willamette Falls and downtown Portland, Oregon.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
November 8 » Montana is admitted as the 41st U.S. state.
Day of marriage May 6, 1911
The temperature on May 6, 1911 was between 2.7 °C and 13.9 °C and averaged 8.6 °C. There was 12.1 hours of sunshine (80%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 15 » More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
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/I77148.php : accessed September 29, 2026), "Jeltje Postma (1889-????)".
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