The temperature on August 21, 1909 was between 11.1 °C and 15.9 °C and averaged 13.6 °C. There was 26.5 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 2 » The Paris Film Congress opens. An attempt by European producers to form an equivalent to the MPCC cartel in the United States.
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.
April 11 » The city of Tel Aviv is founded.
April 27 » Sultan of Ottoman Empire Abdul Hamid II is overthrown, and is succeeded by his brother, Mehmed V.
June 26 » The Science Museum in London comes into existence as an independent entity.
Day of marriage January 31, 1931
The temperature on January 31, 1931 was between -0.4 °C and 1.5 °C and averaged 0.7 °C. 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.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I18096.php : accessed February 15, 2026), "Roelofje Jager (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.