February 1 » Fountains Valley, Pretoria, the oldest nature reserve in Africa, is proclaimed by President Paul Kruger.
April 3 » The trial in the libel case brought by Oscar Wilde begins, eventually resulting in his imprisonment on charges of homosexuality.
May 25 » Playwright, poet and novelist Oscar Wilde is convicted of "committing acts of gross indecency with other male persons" and sentenced to serve two years in prison.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
November 28 » The first American automobile race takes place over the 54 miles from Chicago's Jackson Park to Evanston, Illinois. Frank Duryea wins in approximately 10 hours.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage July 23, 1930
The temperature on July 23, 1930 was between 10.3 °C and 14.2 °C and averaged 12.6 °C. There was 9.5 mm of rain during 7.1 hours. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. 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 6 » The first diesel-powered automobile trip is completed, from Indianapolis, Indiana, to New York, New York.
February 18 » While studying photographs taken in January, Clyde Tombaugh discovers Pluto.
March 6 » International Unemployment Day demonstrations globally initiated by the Comintern.
April 6 » At the end of the Salt March, Gandhi raises a lump of mud and salt and declares, "With this, I am shaking the foundations of the British Empire."
May 1 » "Pluto" is officially proposed for the name of the newly-discovered dwarf planet Pluto by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on.
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
Day of death April 25, 1957
The temperature on April 25, 1957 was between 5.1 °C and 12.9 °C and averaged 8.5 °C. There was 1.2 mm of rain during 1.7 hours. There was 5.7 hours of sunshine (39%). The partly clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the north-northeast. Source: KNMI
January 14 » Kripalu Maharaj was named fifth Jagadguru (world teacher) after giving seven days of speeches before 500 Hindu scholars.
March 6 » Ghana becomes the first Sub-Saharan country to gain independence from the British.
April 5 » In India, Communists win the first elections in united Kerala and E. M. S. Namboodiripad is sworn in as the first Chief Minister.
May 22 » South Africa's government approves of racial separation in universities.
June 21 » Ellen Fairclough is sworn in as Canada's first female Cabinet Minister.
July 11 » Prince Karim Husseini Aga Khan IV inherits the office of Imamat as the 49th Imam of Shia Imami Ismai'li worldwide, after the death of Sir Sultan Mahommed Shah Aga Khan III.
When copying data from this family tree, please include a reference to the origin: Tjitze Koster, "Family tree Koster Twijslerheide e.o.", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koster/I5985.php : accessed February 3, 2026), "Rintje van der Henne (1895-1957)".
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