January 17 » The United States takes possession of Wake Island in the Pacific Ocean.
February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
July 29 » The First Hague Convention is signed.
September 13 » Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m - 17,058ft), the highest peak of Mount Kenya.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
Day of marriage June 30, 1923
The temperature on June 30, 1923 was between 9.5 °C and 19.0 °C and averaged 13.2 °C. There was 1.0 hours of sunshine (6%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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 9 » Juan de la Cierva makes the first autogyro flight.
April 15 » Insulin becomes generally available for use by people with diabetes.
September 12 » Southern Rhodesia, today called Zimbabwe, is annexed by the United Kingdom.
September 13 » Following a military coup in Spain, Miguel Primo de Rivera takes over, setting up a dictatorship.
October 13 » Ankara becomes the capital of Turkey.
November 9 » In Munich, Germany, police and government troops crush the Beer Hall Putsch in Bavaria. The failed coup is the work of the Nazis.
Day of death July 10, 1973
The temperature on July 10, 1973 was between 7.9 °C and 23.7 °C and averaged 17.4 °C. There was -0.1 mm of rain. There was 10.1 hours of sunshine (61%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 7 » In his second shooting spree of the week, Mark Essex fatally shoots seven people and wounds five others at Howard Johnson's Hotel in New Orleans, Louisiana, before being shot to death by police officers.
February 27 » The American Indian Movement occupies Wounded Knee in protest of the federal government.
May 5 » Secretariat wins the 1973 Kentucky Derby in 1:59⁄5, an as-yet unbeaten record.
May 8 » A 71-day standoff between federal authorities and the American Indian Movement members occupying the Pine Ridge Reservation at Wounded Knee, South Dakota ends with the surrender of the militants.
May 25 » In protest against the dictatorship in Greece, the captain and crew on Greek naval destroyer Velos mutiny and refuse to return to Greece, instead anchoring at Fiumicino, Italy.
November 1 » The Indian state of Mysore is renamed as Karnataka to represent all the regions within Karunadu.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I17133.php : accessed February 18, 2026), "Jan Wilts (1899-1973)".
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