January 30 » The first Anglo-Japanese Alliance is signed in London.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
August 22 » Cadillac Motor Company is founded.
November 29 » The Pittsburgh Stars defeated the Philadelphia Athletics, 11–0 to win the first championship associated with an American national professional football league.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of marriage May 13, 1931
The temperature on May 13, 1931 was between 10.7 °C and 22.9 °C and averaged 16.5 °C. There was 0.1 mm of rain during 0.1 hours. There was 10.4 hours of sunshine (67%). 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 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 13 » The British Raj completes its transfer from Calcutta to New Delhi.
March 5 » The British Raj: Gandhi–Irwin Pact is signed.
May 29 » Michele Schirru, a citizen of the United States, is executed by Italian military firing squad for intent to kill Benito Mussolini.
October 1 » The George Washington Bridge in the United States, linking New Jersey and New York, is opened.
October 17 » Al Capone is convicted of income tax evasion.
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/I138022.php : accessed October 20, 2026), "Jouke Hoekstra (1902-)".
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