The temperature on March 15, 1911 was between -1.2 °C and 6.7 °C and averaged 2.8 °C. There was 1.5 mm of rain. There was 5.2 hours of sunshine (44%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
June 22 » George V and Mary of Teck are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
Day of marriage May 10, 1930
The temperature on May 10, 1930 was between 3.6 °C and 13.8 °C and averaged 8.2 °C. There was 3.5 mm of rain during 4.5 hours. There was 5.3 hours of sunshine (34%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. 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.
January 30 » The Politburo of the Soviet Union orders the extermination of the Kulaks.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
May 7 » The 7.1 Mw Salmas earthquake shakes northwestern Iran and southeastern Turkey with a maximum Mercalli intensity of IX (Violent). Up to three-thousand people were killed.
May 24 » Amy Johnson lands in Darwin, Northern Territory, becoming the first woman to fly solo from England to Australia (she left on May 5 for the 11,000 mile flight).
June 16 » Sovnarkom establishes decree time in the USSR.
July 30 » In Montevideo, Uruguay wins the first FIFA World Cup.
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/I80562.php : accessed October 2, 2026), "Tjallina Henderika Wijkstra (1911-)".
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