April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
December 28 » The Syracuse Athletic Club defeated the New York Philadelphians, 5–0, in the first indoor professional football game, which was held at Madison Square Garden.
Day of marriage May 11, 1930
The temperature on May 11, 1930 was between 4.9 °C and 13.0 °C and averaged 9.3 °C. There was 2.1 mm of rain during 2.8 hours. There was -0.1 hours of sunshine (0%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. 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.
January 26 » The Indian National Congress declares 26 January as Independence Day or as the day for Poorna Swaraj ("Complete Independence") which occurred 17 years later.
January 30 » The Politburo of the Soviet Union orders the extermination of the Kulaks.
March 6 » International Unemployment Day demonstrations globally initiated by the Comintern.
April 28 » The Independence Producers hosted the first night game in the history of Organized Baseball in Independence, Kansas.
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
November 11 » Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
Day of death January 30, 1946
The temperature on January 30, 1946 was between 2.4 °C and 9.6 °C and averaged 5.5 °C. There was 2.3 mm of rain during 1.7 hours. There was 1.8 hours of sunshine (20%). The average windspeed was 6 Bft (strong wind) and was prevailing from the west. Source: KNMI
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
January 3 » Popular Canadian American jockey George Woolf dies in a freak accident during a race; the annual George Woolf Memorial Jockey Award is created to honor him.
January 25 » The United Mine Workers rejoins the American Federation of Labor.
March 6 » Ho Chi Minh signs an agreement with France which recognizes Vietnam as an autonomous state in the Indochinese Federation and the French Union.
May 5 » The International Military Tribunal for the Far East begins in Tokyo with twenty-eight Japanese military and government officials accused of war crimes and crimes against humanity.
May 9 » King Victor Emmanuel III of Italy abdicates and is succeeded by Umberto II.
December 17 » Kurdistan flag day, the flag of Kurdistan was raised for the first time in Mahabad in eastern Kurdistan (Iran).
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I2121.php : accessed January 23, 2026), "Helmut Knippenberg (1902-1946)".
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