The temperature on September 16, 1909 was between 11.6 °C and 19.7 °C and averaged 14.4 °C. There was 3.7 hours of sunshine (29%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
March 23 » Theodore Roosevelt leaves New York for a post-presidency safari in Africa. The trip is sponsored by the Smithsonian Institution and National Geographic Society.
March 31 » Serbia formally withdraws its opposition to Austro-Hungarian actions in the Bosnian Crisis.
April 27 » Sultan of Ottoman Empire Abdul Hamid II is overthrown, and is succeeded by his brother, Mehmed V.
September 20 » The South Africa Act 1909 creates the Union of South Africa from the British Colonies from four smaller colonies.
November 18 » Two United States warships are sent to Nicaragua after 500 revolutionaries (including two Americans) are executed by order of José Santos Zelaya.
Day of marriage June 4, 1930
The temperature on June 4, 1930 was between 11.7 °C and 23.6 °C and averaged 17.4 °C. There was 12.8 hours of sunshine (78%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. 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 10 » The Việt Nam Quốc Dân Đảng launches the failed Yên Bái mutiny in hope to overthrow French protectorate over Vietnam.
February 16 » The Romanian Football Federation joins FIFA.
April 28 » The Independence Producers hosted the first night game in the history of Organized Baseball in Independence, Kansas.
May 7 » The 7.1 Mw Salmas earthquake shakes northwestern Iran and southeastern Turkey with a maximum Mercalli intensity of IX (Violent). Up to three-thousand people were killed.
September 27 » Bobby Jones wins the (pre-Masters) Grand Slam of golf.
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: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I133356.php : accessed October 20, 2026), "Lydia Anna Koolstra (1909-)".
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