April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
August 9 » Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
Day of marriage August 20, 1921
The temperature on August 20, 1921 was between 13.7 °C and 28.1 °C and averaged 20.5 °C. There was 1.3 mm of rain. There was 6.6 hours of sunshine (46%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
When copying data from this family tree, please include a reference to the origin: LvH, "Genealogy Van Heeren", database, Genealogy Online (https://www.genealogieonline.nl/afstammelingen-henricus-van-heer/I24364.php : accessed June 12, 2024), "Ariana de GEUS (1902-)".
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