The temperature on January 17, 1910 was between 1.0 °C and 7.8 °C and averaged 5.1 °C. There was 8.8 mm of rain. There was 1.2 hours of sunshine (14%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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 12 » SMSZrínyi, one of the last pre-dreadnought battleships built by the Austro-Hungarian Navy, is launched.
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
October 6 » Eleftherios Venizelos is elected prime minister of Greece for the first of seven times.
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
November 21 » Sailors on board Brazil's warships including the Minas Gerais, São Paulo, and Bahia, violently rebel in what is now known as the Revolta da Chibata (Revolt of the Lash).
Day of death May 29, 1971
The temperature on May 29, 1971 was between 6.3 °C and 16.7 °C and averaged 12.0 °C. There was 10.7 hours of sunshine (66%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
March 26 » East Pakistan declares its independence from Pakistan to form Bangladesh and the Bangladesh Liberation War begins.
May 13 » Over 900 unarmed Bengali Hindus are murdered in the Demra massacre.
May 19 » Mars probe program: Mars 2 is launched by the Soviet Union.
May 20 » In the Chuknagar massacre, Pakistani forces massacre thousands, mostly Bengali Hindus.
December 16 » Bangladesh Liberation War and Indo-Pakistani War of 1971: The ceasefire of the Pakistan Army brings an end to both conflicts. This is commemorated annually as Victory Day in Bangladesh, and as Vijay Diwas in India.
December 20 » The international aid organization Doctors Without Borders is founded by Bernard Kouchner and a group of journalists in Paris, France.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I135714.php : accessed February 16, 2026), "Wietske de Groot (1910-1971)".
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