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
March 3 » Rockefeller Foundation: John D. Rockefeller Jr. announces his retirement from managing his businesses so that he can devote all his time to philanthropy.
April 28 » Frenchman Louis Paulhan wins the 1910 London to Manchester air race, the first long-distance aeroplane race in England.
May 6 » George V becomes King of Great Britain, Ireland, and many overseas territories, on the death of his father, Edward VII.
June 25 » Igor Stravinsky's ballet The Firebird is premiered in Paris, bringing him to prominence as a composer.
September 20 » The ocean liner SSFrance, later known as the "Versailles of the Atlantic", is launched.
September 26 » Indian journalist Swadeshabhimani Ramakrishna Pillai is arrested after publishing criticism of the government of Travancore and is exiled.
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.
July 1 » Wiley Post and Harold Gatty become the first people to circumnavigate the globe in a single-engined monoplane aircraft.
July 16 » Emperor Haile Selassie signs the first constitution of Ethiopia.
August 24 » France and the Soviet Union sign a neutrality pact.
October 1 » The George Washington Bridge in the United States, linking New Jersey and New York, is opened.
December 9 » The Constituent Cortes approves a constitution which establishes the Second Spanish Republic.
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
February 27 » The Government of Italy asks for help to keep the Leaning Tower of Pisa from toppling over.
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.
July 20 » Vietnam War: Viet Cong forces attack the capital of Định Tường Province, Cái Bè, killing 11 South Vietnamese military personnel and 40 civilians (30 of whom are children).
October 29 » The United Republic of Tanganyika and Zanzibar is renamed the United Republic of Tanzania.
December 1 » Vietnam War: U.S. President Lyndon B. Johnson and his top-ranking advisers meet to discuss plans to bomb North Vietnam.
December 11 » Che Guevara speaks at the United Nations General Assembly in New York City.
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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 January 8, 2026), "Heintje (Hentje) Doppenberg (1910-1964)".
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