January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
March 31 » The Eiffel Tower is officially opened.
April 22 » At noon, thousands rush to claim land in the Land Rush of 1889. Within hours the cities of Oklahoma City and Guthrie are formed with populations of at least 10,000.
May 2 » Menelik II, Emperor of Ethiopia, signs the Treaty of Wuchale, giving Italy control over Eritrea.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
Day of marriage March 31, 1921
The temperature on March 31, 1921 was between 5.0 °C and 12.4 °C and averaged 8.2 °C. There was 0.5 mm of rain. There was 1.4 hours of sunshine (11%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. 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.
February 15 » Kingdom of Romania establishes its legation in Helsinki.
February 22 » After Russian forces under Baron Roman von Ungern-Sternberg drive the Chinese out, the Bogd Khan is reinstalled as the emperor of Mongolia.
March 1 » The Australian cricket team captained by Warwick Armstrong becomes the first team to complete a whitewash of The Ashes, something that would not be repeated for 86 years.
June 12 » Mikhail Tukhachevsky orders the use of chemical weapons against the Tambov Rebellion, bringing an end to the peasant uprising.
July 22 » Rif War: The Spanish Army suffers its worst military defeat in modern times to the Berbers of the Rif region of Spanish Morocco.
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
Day of death August 22, 1959
The temperature on August 22, 1959 was between 14.0 °C and 23.4 °C and averaged 18.2 °C. There was 6.1 hours of sunshine (43%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
January 4 » Luna 1 becomes the first spacecraft to reach the vicinity of the Moon.
January 30 » MSHans Hedtoft, said to be the safest ship afloat and "unsinkable" like the RMSTitanic, strikes an iceberg on her maiden voyage and sinks, killing all 95 aboard.
May 30 » The Auckland Harbour Bridge, crossing the Waitematā Harbour in Auckland, New Zealand, is officially opened by Governor-General Charles Lyttelton, 10th Viscount Cobham.
September 15 » Nikita Khrushchev becomes the first Soviet leader to visit the United States.
September 27 » Typhoon Vera kills nearly 5,000 people in Japan.
October 21 » In New York City, the Solomon R. Guggenheim Museum opens to the public.
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I6962.php : accessed September 28, 2026), "TEUNIS van 't HOF (1889-1959)".
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