May 9 » Australia opens its first national parliament in Melbourne.
August 14 » The first claimed powered flight, by Gustave Whitehead in his Number 21.
September 14 » U.S. President William McKinley dies after being mortally wounded on September 6 by anarchist Leon Czolgosz and is succeeded by Vice President Theodore Roosevelt.
October 24 » Annie Edson Taylor becomes the first person to go over Niagara Falls in a barrel.
October 29 » Leon Czolgosz, the assassin of U.S. President William McKinley, is executed by electrocution.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
Day of death February 24, 1931
The temperature on February 24, 1931 was between -2.7 °C and 2.7 °C and averaged 0.1 °C. There was 0.1 mm of rain during 0.1 hours. The average windspeed was 2 Bft (weak wind) 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.
March 26 » Swissair is founded as the national airline of Switzerland.
April 14 » The Spanish Cortes deposes King Alfonso XIII and proclaims the Second Spanish Republic.
May 14 » Five unarmed civilians are killed in the Ådalen shootings, as the Swedish military is called in to deal with protesting workers.
July 1 » United Airlines begins service (as Boeing Air Transport).
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I569335.php : accessed February 24, 2026), "Siebe Zwaagstra (1901-1931)".
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