The temperature on April 18, 1947 was between 2.5 °C and 16.3 °C and averaged 9.9 °C. There was 11.6 hours of sunshine (83%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 1 » The Canadian Citizenship Act 1946 comes into effect, converting British subjects into Canadian citizens. Prime Minister William Lyon Mackenzie King becomes the first Canadian citizen.
January 3 » Proceedings of the U.S. Congress are televised for the first time.
March 25 » An explosion in a coal mine in Centralia, Illinois kills 111.
June 24 » Kenneth Arnold makes the first widely reported UFO sighting near Mount Rainier, Washington, leading to the coining of the phrase "flying saucer".
July 6 » Referendum held in Sylhet to decide its fate in the Partition of India.
November 17 » American scientists John Bardeen and Walter Houser Brattain observe the basic principles of the transistor, a key element for the electronics revolution of the 20th century.
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/I9975.php : accessed February 21, 2026), "Groenendal (1947-1947)".
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.