The temperature on November 10, 1889 was about 9.1 °C. The air pressure was 2 kgf/m2 and came mainly from the northwest. The airpressure was 77 cm mercury. The atmospheric humidity was 100%. Source: KNMI
January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
April 1 » The University of Northern Colorado was established, as the Colorado State Normal School.
May 6 » The Eiffel Tower is officially opened to the public at the Universal Exposition in Paris.
August 13 » William Gray of Hartford, Connecticut is granted United States Patent Number 408,709 for "Coin-controlled apparatus for telephones."
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
Day of death October 4, 1962
The temperature on October 4, 1962 was between 6.8 °C and 15.5 °C and averaged 13.2 °C. The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
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/I76610.php : accessed October 25, 2026), "Heinze de Boer (1889-1962)".
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