February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
April 15 » Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
May 17 » Second Boer War: British troops relieve Mafeking.
October 19 » Max Planck discovers Planck's law of black-body radiation.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage April 22, 1924
The temperature on April 22, 1924 was between 2.1 °C and 6.5 °C and averaged 4.8 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. 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.
February 8 » Capital punishment: The first state execution in the United States by gas chamber takes place in Nevada.
March 3 » The Free State of Fiume is annexed by the Kingdom of Italy.
March 8 » A mine disaster kills 172 coal miners near Castle Gate, Utah.
March 16 » In accordance with the Treaty of Rome, Fiume becomes annexed as part of Italy.
April 15 » Rand McNally publishes its first road atlas.
September 17 » The Border Protection Corps is established in the Second Polish Republic for the defence of the eastern border against armed Soviet raids and local bandits.
Day of death July 10, 1990
The temperature on July 10, 1990 was between 9.9 °C and 18.0 °C and averaged 14.0 °C. There was 1.9 mm of rain during 1.5 hours. There was 6.6 hours of sunshine (40%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 1 » David Dinkins is sworn in as New York City's first black mayor.
March 20 » Ferdinand Marcos's widow, Imelda Marcos, goes on trial for bribery, embezzlement, and racketeering.
May 13 » The Dinamo–Red Star riot took place at Maksimir Stadium in Zagreb, Croatia between the Bad Blue Boys (fans of Dinamo Zagreb) and the Delije (fans of Red Star Belgrade).
July 6 » The Electronic Frontier Foundation is founded.
September 16 » The railroad between the People's Republic of China and Kazakhstan is completed at Dostyk, adding a sizable link to the concept of the Eurasian Land Bridge.
September 29 » The YF-22, which would later become the F-22 Raptor, flies for the first time.
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/I2747.php : accessed March 16, 2026), "Martinus Henricus Petrus "Martien" Steijlen (1900-1990)".
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