January 17 » El Yunque National Forest in Puerto Rico becomes part of the United States National Forest System as the Luquillo Forest Reserve.
March 14 » Pelican Island National Wildlife Refuge, the first national wildlife refuge in the US, is established by President Theodore Roosevelt.
April 26 » Atlético Madrid Association football club is founded
August 18 » German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.
November 17 » The Russian Social Democratic Labour Party splits into two groups: The Bolsheviks (Russian for "majority") and Mensheviks (Russian for "minority").
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
Day of marriage August 21, 1924
The temperature on August 21, 1924 was between 6.8 °C and 17.7 °C and averaged 12.0 °C. There was 5.8 mm of rain. There was 5.3 hours of sunshine (37%). The average windspeed was 4 Bft (moderate breeze) 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.
March 3 » The 407-year-old Islamic caliphate is abolished, when Caliph Abdülmecid II of the Ottoman Caliphate is deposed. The last remnant of the old regime gives way to the reformed Turkey of Kemal Atatürk.
March 3 » The Free State of Fiume is annexed by the Kingdom of Italy.
April 1 » The Royal Canadian Air Force is formed.
April 8 » Sharia courts are abolished in Turkey, as part of Atatürk's Reforms.
October 25 » The Zinoviev letter, which Zinoviev himself denied writing, is published in the Daily Mail; the Labour party would later blame this letter for the Conservatives' landslide election win four days later.
November 23 » Edwin Hubble's discovery, that the Andromeda "nebula" is actually another island galaxy far outside of our own Milky Way, is first published in The New York Times.
When copying data from this family tree, please include a reference to the origin: Arie Verloop, "Family tree Verloop", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-verloop/I8382.php : accessed February 26, 2026), "Dirkje HENNIP (1903-> 1956)".
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