January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Cadillac Motor Company is founded.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
Day of marriage May 31, 1930
The temperature on May 31, 1930 was between 10.0 °C and 24.8 °C and averaged 16.1 °C. There was 8.2 mm of rain during 2.1 hours. There was 4.9 hours of sunshine (30%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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 16 » The Romanian Football Federation joins FIFA.
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
August 29 » The last 36 remaining inhabitants of St Kilda are voluntarily evacuated to other parts of Scotland.
September 17 » The Kurdish Ararat rebellion is suppressed by the Turks.
November 11 » Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
December 7 » W1XAV in Boston, Massachusetts telecasts video from the CBS radio orchestra program, The Fox Trappers. The telecast also includes the first television commercial in the United States, an advertisement for I.J. Fox Furriers, who sponsored the radio show.
When copying data from this family tree, please include a reference to the origin: Jan Ploegman, "Genealogy Nieboer ", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-nieboer/I7766.php : accessed May 24, 2024), "Leentje Nieboer (1902-< 2002)".
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