The temperature on January 22, 1954 was between -1.2 °C and 1.8 °C and averaged 0.1 °C. There was 0.2 mm of rain. The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
February 23 » The first mass inoculation of children against polio with the Salk vaccine begins in Pittsburgh.
April 25 » The first practical solar cell is publicly demonstrated by Bell Telephone Laboratories.
May 17 » The United States Supreme Court hands down a unanimous decision in Brown v. Board of Education of Topeka, Kansas, outlawing racial segregation in public schools.
September 3 » The German submarineU-505 begins its move from a specially constructed dock to its site at Chicago's Museum of Science and Industry.
November 12 » Ellis Island ceased operations.
November 19 » Télé Monte Carlo, Europe's oldest private television channel, is launched by Prince Rainier III.
Day of death September 20, 2018
The temperature on September 20, 2018 was between 16.4 °C and 23.6 °C and averaged 19.7 °C. There was 7.4 hours of sunshine (60%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Klaas Konjer, "Family tree Konjer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-konjer/I1107.php : accessed January 30, 2026), "Hendrik Konjer (1954-2018)".
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