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.
April 11 » The city of Tel Aviv is founded.
June 26 » The Science Museum in London comes into existence as an independent entity.
July 25 » Louis Blériot makes the first flight across the English Channel in a heavier-than-air machine from Calais to Dover, England, United Kingdom in 37 minutes.
August 24 » Workers start pouring concrete for the Panama Canal.
October 26 » An Jung-geun assassinates Japan's Resident-General of Korea.
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.
January 6 » The first diesel-powered automobile trip is completed, from Indianapolis, Indiana, to New York, New York.
February 18 » Elm Farm Ollie becomes the first cow to fly in a fixed-wing aircraft and also the first cow to be milked in an aircraft.
June 16 » Sovnarkom establishes decree time in the USSR.
June 17 » U.S. President Herbert Hoover signs the Smoot–Hawley Tariff Act into law.
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
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 19, 2026), "Lydia Anna Koolstra (1909-)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.