April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
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 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage May 9, 1923
The temperature on May 9, 1923 was between 6.2 °C and 13.6 °C and averaged 9.1 °C. There was 5.1 mm of rain. There was 1.9 hours of sunshine (12%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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.
January 11 » Occupation of the Ruhr: Troops from France and Belgium occupy the Ruhr area to force Germany to make its World War I reparation payments.
September 4 » Maiden flight of the first U.S. airship, the USSShenandoah.
September 7 » The International Criminal Police Organization (INTERPOL) is formed.
September 13 » Following a military coup in Spain, Miguel Primo de Rivera takes over, setting up a dictatorship.
October 29 » Turkey becomes a republic following the dissolution of the Ottoman Empire.
Day of death January 14, 1970
The temperature on January 14, 1970 was between 2.2 °C and 6.7 °C and averaged 4.1 °C. There was 2.7 hours of sunshine (33%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
April 24 » The Gambia becomes a republic within the Commonwealth of Nations, with Dawda Jawara as its first President.
April 28 » Vietnam War: U.S. President Richard Nixon formally authorizes American combat troops to take part in the Cambodian campaign.
May 11 » The 1970 Lubbock tornado kills 26 and causes $250million in damage.
September 5 » Vietnam War: Operation Jefferson Glenn begins: The United States 101st Airborne Division and the South Vietnamese 1st Infantry Division initiate a new operation in Thừa Thiên–Huế Province.
September 9 » A British airliner is hijacked by the Popular Front for the Liberation of Palestine and flown to Dawson's Field in Jordan.
October 9 » The Khmer Republic is proclaimed in Cambodia.
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/I75695.php : accessed February 11, 2026), "Herre Kamstra (1897-1970)".
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