January 31 » Czechoslav Trade Union Association is founded in Prague.
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.
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.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage December 28, 1921
The temperature on December 28, 1921 was between 4.8 °C and 12.5 °C and averaged 8.5 °C. There was 7.6 mm of rain. The average windspeed was 6 Bft (strong wind) 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.
January 20 » The British K-class submarine HMS K5 sinks in the English Channel; all 56 on board die.
April 11 » Emir Abdullah establishes the first centralised government in the newly created British protectorate of Transjordan.
May 31 » The Tulsa race massacre kills at least 39, but other estimates of black fatalities vary from 55 to about 300.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
July 11 » The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic.
August 3 » Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.
Day of death August 6, 1955
The temperature on August 6, 1955 was between 8.5 °C and 20.3 °C and averaged 14.6 °C. There was 3.6 hours of sunshine (24%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
April 12 » The polio vaccine, developed by Dr. Jonas Salk, is declared safe and effective.
April 24 » The Bandung Conference ends: Twenty-nine non-aligned nations of Asia and Africa finish a meeting that condemns colonialism, racism, and the Cold War.
May 14 » Cold War: Eight Communist bloc countries, including the Soviet Union, sign a mutual defense treaty called the Warsaw Pact.
June 16 » In a futile effort to topple Argentine President Juan Perón, rogue aircraft pilots of the Argentine Navy drop several bombs upon an unarmed crowd demonstrating in favor of Perón in Buenos Aires, killing 364 and injuring at least 800. At the same time on the ground, some soldiers attempt to stage a coup but are suppressed by loyal forces.
August 17 » Hurricane Diane made landfall near Wilmington, North Carolina, and it went on to cause major floods and kill more than 184 people.
September 25 » The Royal Jordanian Air Force is founded.
When copying data from this family tree, please include a reference to the origin: Doug Brough, "Dam of Vlaardingen Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/dam-of-vlaardingen-family-tree/P108.php : accessed May 10, 2025), "Sophia Warmels (1897-1955)".
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