The temperature on December 24, 1893 was about 3.1 °C. There was 0.2 mm of rain. The airpressure was 77 cm mercury. The atmospheric humidity was 100%. Source: KNMI
In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
January 13 » The Independent Labour Party of the United Kingdom holds its first meeting.
February 1 » Thomas A. Edison finishes construction of the first motion picture studio, the Black Maria in West Orange, New Jersey.
June 13 » Grover Cleveland notices a rough spot in his mouth and on July 1 undergoes secret, successful surgery to remove a large, cancerous portion of his jaw; the operation was not revealed to the public until 1917, nine years after the president's death.
July 9 » Daniel Hale Williams, American heart surgeon, performs the first successful open-heart surgery in United States without anesthesia.
August 14 » France becomes the first country to introduce motor vehicle registration.
September 16 » Settlers make a land run for prime land in the Cherokee Strip in Oklahoma.
Day of death March 30, 1930
The temperature on March 30, 1930 was between 1.7 °C and 13.6 °C and averaged 7.4 °C. There was 9.7 hours of sunshine (76%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 18 » Elm Farm Ollie becomes the first cow to fly in a fixed-wing aircraft and also the first cow to be milked in an aircraft.
March 12 » Mahatma Gandhi begins the Salt March, a 200-mile march to the sea to protest the British monopoly on salt in India.
May 1 » "Pluto" is officially proposed for the name of the newly-discovered dwarf planet Pluto by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on.
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
November 11 » Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
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/I87434.php : accessed October 6, 2026), "Willem Pots (1893-1930)".
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