The temperature on April 24, 1917 was between -1.0 °C and 10.8 °C and averaged 5.6 °C. There was 3.8 hours of sunshine (26%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 1 » The Zimmermann Telegram is reprinted in newspapers across the United States after the U.S. government releases its unencrypted text.
April 12 » World War I: Canadian forces successfully complete the taking of Vimy Ridge from the Germans.
November 5 » Tikhon is elected the Patriarch of Moscow and of the Russian Orthodox Church.
December 6 » Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
December 7 » World War I: The United States declares war on Austria-Hungary.
December 12 » Father Edward J. Flanagan founds Boys Town as a farm village for wayward boys.
Day of marriage May 31, 1938
The temperature on May 31, 1938 was between 8.9 °C and 16.6 °C and averaged 13.7 °C. There was 5.0 hours of sunshine (31%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 18 » Second Sino-Japanese War: During the Nanking Massacre, the Nanking Safety Zone International Committee is renamed "Nanking International Rescue Committee", and the safety zone in place for refugees falls apart.
March 27 » Second Sino-Japanese War: The Battle of Taierzhuang begins, resulting several weeks later in the war's first major Chinese victory over Japan.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
October 10 » Abiding by the Munich Agreement, Czechoslovakia completes its withdrawal from the Sudetenland.
November 9 » The Nazi German diplomat Ernst vom Rath dies from gunshot wounds by Herschel Grynszpan, an act which the Nazis used as an excuse to instigate the 1938 national pogrom, also known as Kristallnacht.
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
Day of death February 11, 1992
The temperature on February 11, 1992 was between 6.2 °C and 8.0 °C and averaged 7.1 °C. There was 1.5 mm of rain during 5.0 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
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/I15919.php : accessed February 17, 2026), "Jantina Jacoba Heller (1917-1992)".
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