The temperature on June 6, 1910 was between 15.9 °C and 29.9 °C and averaged 22.2 °C. There was 12.6 hours of sunshine (76%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 13 » The first public radio broadcast takes place; a live performance of the operas Cavalleria rusticana and Pagliacci are sent out over the airwaves from the Metropolitan Opera House in New York.
January 15 » Construction ends on the Buffalo Bill Dam in Wyoming, United States, which was the highest dam in the world at the time, at 325ft (99m).
April 12 » SMSZrínyi, one of the last pre-dreadnought battleships built by the Austro-Hungarian Navy, is launched.
May 4 » The Royal Canadian Navy is created.
September 20 » The ocean liner SSFrance, later known as the "Versailles of the Atlantic", is launched.
December 3 » Modern neon lighting is first demonstrated by Georges Claude at the Paris Motor Show.
Day of marriage February 20, 1931
The temperature on February 20, 1931 was between -6.1 °C and -1.7 °C and averaged -3.0 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. 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 20 » The U.S. Congress approves the construction of the San Francisco–Oakland Bay Bridge by the state of California.
March 3 » The United States adopts The Star-Spangled Banner as its national anthem.
March 11 » Ready for Labour and Defence of the USSR, abbreviated as GTO, is introduced in the Soviet Union.
May 29 » Michele Schirru, a citizen of the United States, is executed by Italian military firing squad for intent to kill Benito Mussolini.
November 7 » The Chinese Soviet Republic is proclaimed on the anniversary of the October Revolution.
December 11 » Statute of Westminster 1931: The British Parliament establishes legislative equality between the UK and the Dominions of the Commonwealth—Australia, Canada, Newfoundland, New Zealand, South Africa, and Ireland.
Day of death April 12, 1964
The temperature on April 12, 1964 was between 3.4 °C and 9.8 °C and averaged 7.8 °C. There was 7.4 mm of rain during 10.3 hours. The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 1 » The Federation of Rhodesia and Nyasaland is divided into the independent republics of Zambia and Malawi, and the British-controlled Rhodesia.
January 13 » In Manchester, New Hampshire, fourteen-year-old Pamela Mason is murdered. Edward Coolidge is tried and convicted of the crime, but the conviction is set aside by the landmark Fourth Amendment case Coolidge v. New Hampshire (1971).
February 27 » The Government of Italy asks for help to keep the Leaning Tower of Pisa from toppling over.
March 27 » The Good Friday earthquake, the most powerful earthquake recorded in North American history at a magnitude of 9.2 strikes Southcentral Alaska, killing 125 people and inflicting massive damage to the city of Anchorage.
May 9 » Ngô Đình Cẩn, de facto ruler of central Vietnam under his brother President Ngô Đình Diệm before the family's toppling, is executed.
July 2 » Civil rights movement: U.S. President Lyndon B. Johnson signs the Civil Rights Act of 1964 meant to prohibit segregation in public places.
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The Family tree Doppenberg publication was prepared by Henk Doppenberg (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Henk Doppenberg, "Family tree Doppenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-doppenberg/I2646.php : accessed February 24, 2026), "Heintje (Hentje) Doppenberg (1910-1964)".
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