January 1 » Nigeria becomes a British protectorate.
February 20 » The legislature of Hawaii Territory convenes for the first time.
September 2 » Vice President of the United States Theodore Roosevelt utters the famous phrase, "Speak softly and carry a big stick" at the Minnesota State Fair.
October 29 » Leon Czolgosz, the assassin of U.S. President William McKinley, is executed by electrocution.
November 27 » The U.S. Army War College is established.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
Day of marriage May 2, 1923
The temperature on May 2, 1923 was between 5.8 °C and 18.6 °C and averaged 12.0 °C. There was 8.4 hours of sunshine (56%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 9 » Juan de la Cierva makes the first autogyro flight.
February 15 » Greece becomes the last European country to adopt the Gregorian calendar.
March 3 » TIME magazine is published for the first time.
July 1 » The Parliament of Canada suspends all Chinese immigration.
September 29 » The French Mandate for Syria and the Lebanon takes effect.
October 13 » Ankara becomes the capital of Turkey.
Day of death February 6, 1961
The temperature on February 6, 1961 was between 5.1 °C and 10.7 °C and averaged 8.1 °C. There was 0.3 mm of rain during 0.7 hours. There was 0.5 hours of sunshine (5%). The partly or heavily clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
January 25 » 101 Dalmatians premiered from Walt Disney Productions.
April 27 » Sierra Leone is granted its independence from the United Kingdom, with Milton Margai as the first Prime Minister.
May 25 » Apollo program: U.S. President John F. Kennedy announces, before a special joint session of the U.S. Congress, his goal to initiate a project to put a "man on the Moon" before the end of the decade.
September 16 » Pakistan establishes its Space and Upper Atmosphere Research Commission with Abdus Salam as its head.
October 1 » The United States Defense Intelligence Agency is formed, becoming the country's first centralized military intelligence organization.
November 29 » Project Mercury: Mercury-Atlas 5 Mission: Enos, a chimpanzee, is launched into space. The spacecraft orbits the Earth twice and splashes down off the coast of Puerto Rico.
When copying data from this family tree, please include a reference to the origin: Hans Jansen, "Stambomen Hans Sentis", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-sentis/I2201.php : accessed January 29, 2026), "Johannes Adolf Frederik Volkert Kroon (1901-1961)".
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