The temperature on January 21, 1910 was between -2.3 °C and 4.5 °C and averaged 1.3 °C. There was 1.2 mm of rain. There was 2.9 hours of sunshine (34%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
May 11 » An act of the U.S. Congress establishes Glacier National Park in Montana.
June 25 » The United States Congress passes the Mann Act, which prohibits interstate transport of women or girls for “immoral purposes”; the ambiguous language would be used to selectively prosecute people for years to come.
July 4 » The Johnson–Jeffries riots occur after African-American boxer Jack Johnson knocks out white boxer Jim Jeffries in the 15th round. Between 11 and 26 people are killed and hundreds more injured.
October 5 » In a revolution in Portugal the monarchy is overthrown and a republic is declared.
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.
November 23 » Johan Alfred Ander becomes the last person to be executed in Sweden.
Day of marriage October 9, 1936
The temperature on October 9, 1936 was between 0.2 °C and 12.2 °C and averaged 5.6 °C. There was 6.7 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I56263.php : accessed January 21, 2026), "Hendrik Cornelis Helsdingen (1910-)".
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