The temperature on March 25, 1909 was between 4.0 °C and 11.0 °C and averaged 8.1 °C. There was 4.9 mm of rain. There was 2.7 hours of sunshine (22%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
February 26 » Kinemacolor, the first successful color motion picture process, is first shown to the general public at the Palace Theatre in London.
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.
April 13 » The military of the Ottoman Empire reverses the Ottoman countercoup of 1909 to force the overthrow of Sultan Abdul Hamid II.
June 2 » Alfred Deakin becomes Prime Minister of Australia for the third time.
August 24 » Workers start pouring concrete for the Panama Canal.
Day of marriage April 25, 1931
The temperature on April 25, 1931 was between 7.5 °C and 14.4 °C and averaged 10.0 °C. There was 5.5 mm of rain during 4.3 hours. There was 0.6 hours of sunshine (4%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southeast. 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 21 » Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia.
March 26 » Swissair is founded as the national airline of Switzerland.
March 31 » A Transcontinental & Western Air airliner crashes near Bazaar, Kansas, killing eight, including University of Notre Dame head football coach Knute Rockne.
August 24 » France and the Soviet Union sign a neutrality pact.
August 24 » Resignation of the United Kingdom's Second Labour Government. Formation of the UK National Government.
September 18 » The Mukden Incident gives Japan a pretext to invade and occupy Manchuria.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I4082.php : accessed February 14, 2026), "Jantje de Boer (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.