January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
January 6 » Second Boer War: Having already besieged the fortress at Ladysmith, Boer forces attack it, but are driven back by British defenders.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
July 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage January 7, 1922
The temperature on January 7, 1922 was between -12.7 °C and -3.4 °C and averaged -7.1 °C. There was 1.4 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. 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.
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.
February 6 » The Washington Naval Treaty is signed in Washington, D.C., limiting the naval armaments of United States, Britain, Japan, France, and Italy.
February 27 » A challenge to the Nineteenth Amendment to the United States Constitution, allowing women the right to vote, is rebuffed by the Supreme Court of the United States in Leser v. Garnett.
March 26 » The German Social Democratic Party is founded in Poland.
August 26 » Greco-Turkish War (1919–22): Turkish army launched what has come to be known to the Turks as the "Great Offensive" (Büyük Taarruz). The major Greek defense positions were overrun.
October 29 » King Victor Emmanuel III of Italy appoints Benito Mussolini as Prime Minister.
November 26 » The Toll of the Sea debuts as the first general release film to use two-tone Technicolor. (The Gulf Between was the first film to do so, but it was not widely distributed.)
Day of death April 9, 1969
The temperature on April 9, 1969 was between 6.2 °C and 23.4 °C and averaged 14.3 °C. There was 11.0 hours of sunshine (82%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
January 19 » Student Jan Palach dies after setting himself on fire three days earlier in Prague's Wenceslas Square to protest about the invasion of Czechoslovakia by the Soviet Union in 1968. His funeral turns into another major protest.
January 25 » Brazilian Army captain Carlos Lamarca deserts in order to fight against the military dictatorship, taking with him ten machine guns and 63 rifles.
March 18 » The United States begins secretly bombing the Sihanouk Trail in Cambodia, used by communist forces to infiltrate South Vietnam.
May 16 » Venera program: Venera 5, a Soviet space probe, lands on Venus.
July 3 » Space Race: The biggest explosion in the history of rocketry occurs when the Soviet N-1 rocket explodes and subsequently destroys its launchpad.
November 20 » Occupation of Alcatraz: Native American activists seize control of Alcatraz Island until being ousted by the U.S. Government on June 11, 1971.
When copying data from this family tree, please include a reference to the origin: Jan Werkman, "Family tree Jan Werkman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-jan-werkman/I15509.php : accessed May 11, 2024), "Jantje Kalfsbeek (1900-1969)".
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