March 1 » Battle of Adwa: An Ethiopian army defeats an outnumbered Italian force, ending the First Italo-Ethiopian War.
April 6 » In Athens, the opening of the first modern Olympic Games is celebrated, 1,500 years after the original games are banned by Roman emperor Theodosius I.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
May 27 » The F4-strength St. Louis–East St. Louis tornado hits in St. Louis, Missouri, and East St. Louis, Illinois, killing at least 255 people and causing over $10-million in damage.
June 2 » Guglielmo Marconi applies for a patent for his wireless telegraph.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
Day of marriage April 25, 1923
The temperature on April 25, 1923 was between -2.4 °C and 11.1 °C and averaged 6.0 °C. There was 3.1 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-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.
January 11 » Occupation of the Ruhr: Troops from France and Belgium occupy the Ruhr area to force Germany to make its World War I reparation payments.
June 9 » Bulgaria's military takes over the government in a coup.
August 23 » Captain Lowell Smith and Lieutenant John P. Richter performed the first mid-air refueling on De Havilland DH-4B, setting an endurance flight record of 37 hours.
October 13 » Ankara becomes the capital of Turkey.
October 22 » The royalist Leonardopoulos–Gargalidis coup d'état attempt fails in Greece, discrediting the monarchy and paving the way for the establishment of the Second Hellenic Republic.
November 9 » In Munich, Germany, police and government troops crush the Beer Hall Putsch in Bavaria. The failed coup is the work of the Nazis.
Day of death July 2, 1968
The temperature on July 2, 1968 was between 19.3 °C and 30.6 °C and averaged 24.4 °C. There was 10.4 hours of sunshine (62%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
February 8 » American civil rights movement: The Orangeburg massacre: An attack on black students from South Carolina State University who are protesting racial segregation at the town's only bowling alley, leaves three or four dead in Orangeburg, South Carolina.
March 7 » Vietnam War: The United States and South Vietnamese military begin Operation Truong Cong Dinh to root out Viet Cong forces from the area surrounding Mỹ Tho.
April 8 » BOAC Flight 712 catches fire shortly after takeoff. As a result of her actions in the accident, Barbara Jane Harrison is awarded a posthumous George Cross, the only GC awarded to a woman in peacetime.
April 20 » English politician Enoch Powell makes his controversial "Rivers of Blood" speech.
July 1 » The United States Central Intelligence Agency's Phoenix Program is officially established.
July 18 » Intel is founded in Mountain View, California.
When copying data from this family tree, please include a reference to the origin: Martin Ploeger, "Family tree Ploeger", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ploeger/I34.php : accessed January 19, 2026), "Harm Albert Ploeger (1896-1968)".
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