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 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
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.
Day of marriage May 22, 1930
The temperature on May 22, 1930 was between 6.7 °C and 17.4 °C and averaged 11.0 °C. There was 4.4 mm of rain during 2.9 hours. There was 2.4 hours of sunshine (15%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 31 » The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
June 16 » Sovnarkom establishes decree time in the USSR.
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
August 16 » The first British Empire Games were opened in Hamilton, Ontario by the Governor General of Canada, the Viscount Willingdon.
September 17 » The Kurdish Ararat rebellion is suppressed by the Turks.
Day of death January 11, 1981
The temperature on January 11, 1981 was between -3.6 °C and 3.6 °C and averaged -0.1 °C. There was 5.5 hours of sunshine (68%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
March 11 » Hundreds of students protest in the University of Pristina in Kosovo, then part of Yugoslavia, to give their province more political rights. The protests then became a nationwide movement.
July 29 » A worldwide television audience of over 700million people watch the wedding of Charles, Prince of Wales, and Lady Diana Spencer at St Paul's Cathedral in London.
August 3 » Senegalese opposition parties, under the leadership of Mamadou Dia, launch the Antiimperialist Action Front – Suxxali Reew Mi.
September 18 » The Assemblée Nationale votes to abolish capital punishment in France.
September 26 » Nolan Ryan sets a Major League record by throwing his fifth no-hitter.
October 9 » President François Mitterrand abolishes capital punishment in France.
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/I14416.php : accessed December 28, 2025), "Jelle Merkus (1897-1981)".
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