February 20 » The legislature of Hawaii Territory convenes for the first time.
April 25 » New York becomes the first U.S. state to require automobile license plates.
July 4 » William Howard Taft becomes American governor of the Philippines.
August 14 » The first claimed powered flight, by Gustave Whitehead in his Number 21.
September 6 » Leon Czolgosz, an unemployed anarchist, shoots and fatally wounds US President William McKinley at the Pan-American Exposition in Buffalo, New York.
November 18 » Britain and the United States sign the Hay–Pauncefote Treaty, which nullifies the Clayton–Bulwer Treaty and withdraws British objections to an American-controlled canal in Panama.
Day of marriage May 17, 1930
The temperature on May 17, 1930 was between 6.3 °C and 19.7 °C and averaged 13.8 °C. There was 5.7 hours of sunshine (36%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. 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 3 » Communist Party of Vietnam is founded at a "Unification Conference" held in Kowloon, British Hong Kong.
February 16 » The Romanian Football Federation joins FIFA.
March 13 » The news of the discovery of Pluto is announced by Lowell Observatory.
March 31 » The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years.
September 27 » Bobby Jones wins the (pre-Masters) Grand Slam of golf.
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
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/I101561.php : accessed October 11, 2026), "Froukje Poelstra (1901-)".
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