April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 6 » London becomes the world's first city to host licensed taxicabs.
Day of marriage July 24, 1929
The temperature on July 24, 1929 was between 10.0 °C and 23.2 °C and averaged 16.3 °C. There was 5.3 hours of sunshine (33%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from March 8, 1926 to August 10, 1929 the cabinet De Geer I, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
April 8 » Indian independence movement: At the Delhi Central Assembly, Bhagat Singh and Batukeshwar Dutt throw handouts and bombs to court arrest.
July 27 » The Geneva Convention of 1929, dealing with treatment of prisoners-of-war, is signed by 53 nations.
September 24 » Jimmy Doolittle performs the first flight without a window, proving that full instrument flying from take off to landing is possible.
October 7 » Photius II becomes Ecumenical Patriarch of Constantinople.
November 7 » In New York City, the Museum of Modern Art opens to the public.
December 19 » The Indian National Congress promulgates the Purna Swaraj (the Declaration of the Independence of India).
Day of death January 17, 1954
The temperature on January 17, 1954 was between 3.6 °C and 7.3 °C and averaged 5.3 °C. There was 0.4 mm of rain during 0.3 hours. There was 1.4 hours of sunshine (17%). The partly clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the west. Source: KNMI
January 10 » BOAC Flight 781, a de Havilland DH.106 Comet 1, explodes and falls into the Tyrrhenian Sea killing 35 people.
March 1 » Nuclear weapons testing: The Castle Bravo, a 15-megaton hydrogen bomb, is detonated on Bikini Atoll in the Pacific Ocean, resulting in the worst radioactive contamination ever caused by the United States.
May 7 » Indochina War: The Battle of Dien Bien Phu ends in a French defeat and a Viet Minh victory (the battle began on March 13).
June 18 » Carlos Castillo Armas leads an invasion force across the Guatemalan border, setting in motion the 1954 Guatemalan coup d'état.
July 20 » Germany: Otto John, head of West Germany's secret service, defects to East Germany.
November 27 » Alger Hiss is released from prison after serving 44 months for perjury.
Day of burial January 21, 1954
The average temperature on January 21, 1954 was 3.4 °C. There was 2.9 mm of rain during 5.3 hours. There was 2.0 hours of sunshine (24%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Hans van Ekelenburg, "Family tree Van Roon", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-roon/I22.php : accessed March 4, 2026), "Willem "Wim" Sas (1897-1954)".
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