The temperature on June 12, 1890 was about 14.1 °C. The air pressure was 1 kgf/m2 and came mainly from the south. The airpressure was 75 cm mercury. The atmospheric humidity was 82%. Source: KNMI
April 7 » Completion of the first Lake Biwa Canal.
July 1 » Canada and Bermuda are linked by telegraph cable.
August 6 » At Auburn Prison in New York, murderer William Kemmler becomes the first person to be executed by electric chair.
August 7 » Anna Månsdotter became the last woman to be executed in Sweden for the 1889 Yngsjö murder.
September 24 » The Church of Jesus Christ of Latter-day Saints officially renounces polygamy.
October 12 » Uddevalla Suffrage Association is formed.
Day of marriage April 30, 1921
The temperature on April 30, 1921 was between 6.8 °C and 20.2 °C and averaged 13.7 °C. There was 12.0 hours of sunshine (81%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 9 » Greco-Turkish War: The First Battle of İnönü, the first battle of the war, begins near Eskişehir in Anatolia.
February 15 » Kingdom of Romania establishes its legation in Helsinki.
March 20 » The Upper Silesia plebiscite was a plebiscite mandated by the Versailles Treaty to determine a section of the border between Weimar Germany and Poland.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
September 8 » Margaret Gorman, a 16-year-old, wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dubbed her the first Miss America.
November 11 » The Tomb of the Unknowns is dedicated by US President Warren G. Harding at Arlington National Cemetery.
Day of death February 10, 1970
The temperature on February 10, 1970 was between 0.1 °C and 1.9 °C and averaged 1.0 °C. There was 6.7 mm of rain during 3.3 hours. There was 0.3 hours of sunshine (3%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
August 17 » Venera program: Venera 7 launched. It will later become the first spacecraft to successfully transmit data from the surface of another planet (Venus).
September 7 » Bill Shoemaker beats Johnny Longden's record to become the winningest jockey in horse racing history at Del Mar racetrack
October 8 » Aleksandr Solzhenitsyn wins the Nobel Prize in literature.
October 10 » Fiji becomes independent.
November 14 » Soviet Union enters ICAO, making Russian the fourth official language of organization.
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/I201005.php : accessed February 11, 2026), "Egbert Mertens (1890-1970)".
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