April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
April 20 » Pierre and Marie Curie refine radium chloride.
June 24 » King Edward VII of the United Kingdom develops appendicitis, delaying his coronation.
August 22 » Cadillac Motor Company is founded.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
December 28 » The Syracuse Athletic Club defeated the New York Philadelphians, 5–0, in the first indoor professional football game, which was held at Madison Square Garden.
Day of marriage April 15, 1931
The temperature on April 15, 1931 was between 5.9 °C and 13.0 °C and averaged 8.5 °C. There was 3.1 hours of sunshine (22%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-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.
March 23 » Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar are hanged for the killing of a deputy superintendent of police during the Indian independence movement.
March 25 » The Scottsboro Boys are arrested in Alabama and charged with rape.
March 26 » Ho Chi Minh Communist Youth Union is founded in Vietnam.
August 24 » Resignation of the United Kingdom's Second Labour Government. Formation of the UK National Government.
September 18 » The Mukden Incident gives Japan a pretext to invade and occupy Manchuria.
November 7 » The Chinese Soviet Republic is proclaimed on the anniversary of the October Revolution.
Day of death February 3, 1965
The temperature on February 3, 1965 was between 2.2 °C and 4.9 °C and averaged 3.6 °C. There was 2.1 mm of rain during 2.3 hours. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
March 5 » March Intifada: A Leftist uprising erupts in Bahrain against British colonial presence.
May 12 » The Soviet spacecraft Luna 5 crashes on the Moon.
August 1 » Frank Herbert's novel, Dune was published for the first time. It was named as the world's best-selling science fiction novel in 2003.
August 4 » The Constitution of the Cook Islands comes into force, giving the Cook Islands self-governing status within New Zealand.
November 27 » Vietnam War: The Pentagon tells U.S. President Lyndon B. Johnson that if planned operations are to succeed, the number of American troops in Vietnam has to be increased from 120,000 to 400,000.
December 4 » Launch of Gemini 7 with crew members Frank Borman and Jim Lovell. The Gemini 7 spacecraft was the passive target for the first crewed space rendezvous performed by the crew of Gemini 6A.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I1386.php : accessed February 3, 2026), "Ybel Fokke (IJbel Fokke) Folkers (1902-1965)".
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