The temperature on September 30, 1910 was between 4.9 °C and 18.2 °C and averaged 12.9 °C. There was 5.8 mm of rain. There was 4.4 hours of sunshine (37%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
June 19 » The first Father's Day is celebrated in Spokane, Washington.
August 22 » Korea is annexed by Japan with the signing of the Japan–Korea Treaty of 1910, beginning a period of Japanese rule of Korea that lasted until the end of World War II.
October 5 » In a revolution in Portugal the monarchy is overthrown and a republic is declared.
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
November 20 » Mexican Revolution: Francisco I. Madero issues the Plan de San Luis Potosí, denouncing Mexican President Porfirio Díaz, calling for a revolution to overthrow the government of Mexico, effectively starting the Mexican Revolution.
Day of marriage June 2, 1939
The temperature on June 2, 1939 was between 10.6 °C and 23.4 °C and averaged 17.2 °C. There was 14.2 hours of sunshine (86%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
January 24 » The deadliest earthquake in Chilean history strikes Chillán, killing approximately 28,000 people.
February 28 » The erroneous word "dord" is discovered in the Webster's New International Dictionary, Second Edition, prompting an investigation.
March 3 » In Bombay, Mohandas Gandhi begins a hunger strike in protest at the autocratic rule in British India.
June 17 » Last public guillotining in France: Eugen Weidmann, a convicted murderer, is executed in Versailles outside the Saint-Pierre prison.
September 2 » World War II: Following the start of the invasion of Poland the previous day, the Free City of Danzig (now Gdańsk, Poland) is annexed by Nazi Germany.
September 22 » World War II: A joint German–Soviet military parade in Brest-Litovsk is held to celebrate the successful invasion of Poland.
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/I137768.php : accessed October 22, 2026), "Sietze van der Werff (1910-)".
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