February 24 » Revolution breaks out in Baire, a town near Santiago de Cuba, beginning the Cuban War of Independence, that ends with the Spanish–American War in 1898.
March 15 » Heian Shrine is founded.
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
June 20 » The Kiel Canal, crossing the base of the Jutland peninsula and the busiest artificial waterway in the world, is officially opened.
August 31 » German Count Ferdinand von Zeppelin patents his navigable balloon.
Day of marriage May 12, 1921
The temperature on May 12, 1921 was between 9.2 °C and 21.1 °C and averaged 15.5 °C. There was 9.1 hours of sunshine (59%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. 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.
March 19 » Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.
March 31 » The Royal Australian Air Force is formed.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
October 5 » The World Series is the first to be broadcast on radio.
November 11 » The Tomb of the Unknowns is dedicated by US President Warren G. Harding at Arlington National Cemetery.
December 6 » The Anglo-Irish Treaty is signed in London by British and Irish representatives.
Day of death January 12, 1987
The temperature on January 12, 1987 was between -14.4 °C and -7.6 °C and averaged -10.7 °C. There was 5.7 hours of sunshine (70%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 2 » After the 1986 People Power Revolution, the Philippines enacts a new constitution.
June 19 » Basque separatist group ETA commits one of its most violent attacks, in which a bomb is set off in a supermarket, Hipercor, killing 21 and injuring 45.
July 24 » Hulda Crooks, at 91 years of age, climbed Mt. Fuji. Crooks became the oldest person to climb Japan's highest peak.
August 7 » Cold War: Lynne Cox becomes the first person to swim from the United States to the Soviet Union, crossing the Bering Strait from Little Diomede Island in Alaska to Big Diomede in the Soviet Union.
September 2 » In Moscow, the trial begins for 19-year-old pilot Mathias Rust, who flew his Cessna airplane into Red Square in May.
October 7 » Sikh nationalists declare the independence of Khalistan from India; it is not internationally recognized.
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/I86398.php : accessed October 6, 2026), "Arend Grimmius (1895-1987)".
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