May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
June 28 » The United States Court of Private Land Claims rules James Reavis’s claim to Barony of Arizona is "wholly fictitious and fraudulent."
October 4 » Horace Rawlins wins the first U.S. Open Men's Golf Championship.
October 21 » The Republic of Formosa collapses as Japanese forces invade.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
Day of marriage April 14, 1923
The temperature on April 14, 1923 was between 2.6 °C and 13.2 °C and averaged 9.1 °C. There was 0.1 mm of rain. There was 5.7 hours of sunshine (41%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
June 27 » Capt. Lowell H. Smith and Lt. John P. Richter perform the first ever aerial refueling in a DH.4B biplane.
August 16 » The United Kingdom gives the name "Ross Dependency" to part of its claimed Antarctic territory and makes the Governor-General of the Dominion of New Zealand its administrator.
September 1 » The Great Kantō earthquake devastates Tokyo and Yokohama, killing about 105,000 people.
September 13 » Following a military coup in Spain, Miguel Primo de Rivera takes over, setting up a dictatorship.
September 26 » The German government accepts the occupation of the Ruhr.
October 6 » The Turkish National Movement enters Constantinople.
Day of death July 18, 1966
The temperature on July 18, 1966 was between 6.4 °C and 17.7 °C and averaged 13.8 °C. There was 3.2 mm of rain during 4.2 hours. There was 6.8 hours of sunshine (42%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
May 30 » Former Congolese Prime Minister, Évariste Kimba, and several other politicians are publicly executed in Kinshasa on the orders of President Joseph Mobutu.
June 14 » The Vatican announces the abolition of the Index Librorum Prohibitorum ("index of prohibited books"), which was originally instituted in 1557.
July 8 » King Mwambutsa IV Bangiriceng of Burundi is deposed by his son Prince Charles Ndizi.
September 6 » Prime Minister Hendrik Verwoerd, the architect of apartheid, is stabbed to death in Cape Town, South Africa during a parliamentary meeting.
November 15 » A Boeing 727 carrying Pan Am Flight 708 crashes near Berlin, Germany, killing all three people on board.
December 27 » The Cave of Swallows, the largest known cave shaft in the world, is discovered in Aquismón, San Luis Potosí, Mexico.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I52178.php : accessed February 7, 2026), "Franciscus van der Heijden (1895-1966)".
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