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.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage May 27, 1921
The temperature on May 27, 1921 was between 8.9 °C and 18.5 °C and averaged 13.8 °C. There was 0.1 mm of rain. There was 2.5 hours of sunshine (15%). 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.
January 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
February 21 » Rezā Shāh takes control of Tehran during a successful coup.
March 20 » The Upper Silesia plebiscite was a plebiscite mandated by the Versailles Treaty to determine a section of the border between Weimar Germany and Poland.
May 19 » The United States Congress passes the Emergency Quota Act establishing national quotas on immigration.
November 14 » The Communist Party of Spain is founded, and issues the first edition of Mundo obrero.
Day of death February 19, 1948
The temperature on February 19, 1948 was between -7.7 °C and -0.7 °C and averaged -3.4 °C. There was 4.5 hours of sunshine (44%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
May 3 » The U.S. Supreme Court rules in Shelley v. Kraemer that covenants prohibiting the sale of real estate to blacks and other minorities are legally unenforceable.
May 15 » Following the expiration of The British Mandate for Palestine, the Kingdom of Egypt, Transjordan, Lebanon, Syria, Iraq and Saudi Arabia invade Israel thus starting the 1948 Arab–Israeli War.
July 5 » National Health Service Acts create the national public health system in the United Kingdom.
July 16 » The storming of the cockpit of the Miss Macao passenger seaplane, operated by a subsidiary of the Cathay Pacific Airways, marks the first aircraft hijacking of a commercial plane.
July 29 » Olympic Games: The Games of the XIV Olympiad: After a hiatus of 12 years caused by World War II, the first Summer Olympics to be held since the 1936 Summer Olympics in Berlin, open in London.
December 20 » Indonesian National Revolution: The Dutch military captures Yogyakarta, the temporary capital of the newly-formed Republic of Indonesia.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I136290.php : accessed December 26, 2025), "Jeen Veenstra (1897-1948)".
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