February 23 » Cuba leases Guantánamo Bay to the United States "in perpetuity".
May 29 » In the May Coup, Alexander I, King of Serbia, and Queen Draga, are assassinated in Belgrade by the Black Hand (Crna Ruka) organization.
June 16 » The Ford Motor Company is incorporated.
September 27 » The Wreck of the Old 97, an American rail disaster that became the subject of a popular ballad.
October 10 » The Women's Social and Political Union is founded in support of the enfranchisement of British women.
December 17 » The Wright brothers make the first controlled powered, heavier-than-air flight in the Wright Flyer at Kitty Hawk, North Carolina.
Day of marriage December 15, 1923
The temperature on December 15, 1923 was between -1.1 °C and 7.9 °C and averaged 3.4 °C. There was 1.6 mm of rain. There was 5.0 hours of sunshine (64%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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.
January 1 » Britain's Railways are grouped into the Big Four: LNER, GWR, SR, and LMS.
February 15 » Greece becomes the last European country to adopt the Gregorian calendar.
March 3 » TIME magazine is published for the first time.
April 15 » Insulin becomes generally available for use by people with diabetes.
October 6 » The Turkish National Movement enters Constantinople.
December 21 » United Kingdom and Nepal formally signed an agreement of friendship, called the Nepal–Britain Treaty of 1923, which superseded the Treaty of Sugauli signed in 1816.
Day of death January 14, 1970
The temperature on January 14, 1970 was between 2.2 °C and 6.7 °C and averaged 4.1 °C. There was 2.7 hours of sunshine (33%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
March 4 » French submarine Eurydice explodes underwater, resulting in the loss of the entire 57-man crew.
April 26 » The Convention Establishing the World Intellectual Property Organization enters into force.
May 31 » The 7.9 Mw Ancash earthquake shakes Peru with a maximum Mercalli intensity of VIII (Severe) and a landslide buries the town of Yungay, Peru. Between 66,794–70,000 were killed and 50,000 were injured.
June 21 » Penn Central declares Section 77 bankruptcy in what was the largest U.S. corporate bankruptcy to date.
July 31 » Black Tot Day: The last day of the officially sanctioned rum ration in the Royal Navy.
October 17 » FLQ terrorists murder Quebec Vice-Premier and Minister of Labour Pierre Laporte.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I199296.php : accessed December 26, 2025), "Harm Zuidema (1903-1970)".
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