April 8 » In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.
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.
June 27 » The inaugural run of the Baltimore and Ohio Railroad's Royal Blue from Washington, D.C., to New York City, the first U.S. passenger train to use electric locomotives.
November 5 » George B. Selden is granted the first U.S. patent for an automobile.
November 28 » The first American automobile race takes place over the 54 miles from Chicago's Jackson Park to Evanston, Illinois. Frank Duryea wins in approximately 10 hours.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage July 3, 1930
The temperature on July 3, 1930 was between 16.6 °C and 25.9 °C and averaged 19.4 °C. There was 4.6 mm of rain during 1.0 hours. There was 8.3 hours of sunshine (50%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. 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.
February 16 » The Romanian Football Federation joins FIFA.
February 18 » Elm Farm Ollie becomes the first cow to fly in a fixed-wing aircraft and also the first cow to be milked in an aircraft.
March 6 » International Unemployment Day demonstrations globally initiated by the Comintern.
March 29 » Heinrich Brüning is appointed German Reichskanzler.
June 16 » Sovnarkom establishes decree time in the USSR.
September 27 » Bobby Jones wins the (pre-Masters) Grand Slam of golf.
Day of death February 23, 1986
The temperature on February 23, 1986 was between -9.6 °C and -2.0 °C and averaged -5.5 °C. There was -0.1 mm of rain. There was 8.0 hours of sunshine (77%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
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 28 » Olof Palme, 26th Prime Minister of Sweden, is assassinated in Stockholm.
March 27 » A car bomb explodes outside Russell Street Police HQ in Melbourne, Australia, killing one police officer and injuring 21 people.
April 2 » Alabama governor George Wallace, a former segregationist, best known for the "Stand in the Schoolhouse Door", announces that he will not seek a fifth four-year term and will retire from public life upon the end of his term in January 1987.
April 11 » FBI Miami Shootout: A gun battle in broad daylight in Dade County, Florida between two bank/armored car robbers and pursuing FBI agents. During the firefight, FBI agents Jerry L. Dove and Benjamin P. Grogan were killed, while five other agents were wounded. As a result, the popular .40 S&W cartridge was developed.
August 31 » The Soviet passenger liner Admiral Nakhimov sinks in the Black Sea after colliding with the bulk carrier Pyotr Vasev, killing 423.
November 22 » Mike Tyson from Brooklyn, New York becomes the youngest heavyweight champion in boxing history at age 20.
When copying data from this family tree, please include a reference to the origin: Peter Keesman, "Family tree Keesman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-keesman/I19367.php : accessed February 14, 2026), "Albert de Groot (1895-1986)".
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