The temperature on July 25, 1911 was between 14.8 °C and 25.3 °C and averaged 19.6 °C. There was 5.9 hours of sunshine (37%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
January 21 » The first Monte Carlo Rally takes place.
May 23 » The New York Public Library is dedicated.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
December 29 » Mongolia gains independence from the Qing dynasty, enthroning 8th Jebtsundamba Khutughtu as Khagan of Mongolia.
Day of marriage August 19, 1931
The temperature on August 19, 1931 was between 9.6 °C and 18.4 °C and averaged 15.1 °C. There was 11.0 mm of rain during 7.9 hours. There was 0.7 hours of sunshine (5%). 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.
January 7 » Guy Menzies flies the first solo non-stop trans-Tasman flight (from Australia to New Zealand) in 11 hours and 45 minutes, crash-landing on New Zealand's west coast.
February 3 » The Hawke's Bay earthquake, New Zealand's worst natural disaster, kills 258.
March 5 » The British Raj: Gandhi–Irwin Pact is signed.
April 14 » The Spanish Cortes deposes King Alfonso XIII and proclaims the Second Spanish Republic.
May 29 » Michele Schirru, a citizen of the United States, is executed by Italian military firing squad for intent to kill Benito Mussolini.
September 30 » Start of "Die Voortrekkers" youth movement for Afrikaners in Bloemfontein, South Africa.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I435243.php : accessed February 11, 2026), "Henderika de Valk (1911-)".
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