The temperature on April 13, 1916 was between 6.3 °C and 10.7 °C and averaged 8.0 °C. There was 3.7 mm of rain. There was 4.7 hours of sunshine (34%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-southwest. 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 8 » World War I: A British force unsuccessfully attempts to relieve the siege of Kut (present-day Iraq) in the Battle of Dujaila.
March 15 » United States President Woodrow Wilson sends 4,800 United States troops over the U.S.–Mexico border to pursue Pancho Villa.
May 6 » Vietnamese Emperor Duy Tân is captured while calling upon the people to rise up against the French, and is later deposed and exiled to Réunion island.
July 1 » World War I: First day on the Somme: On the first day of the Battle of the Somme 19,000 soldiers of the British Army are killed and 40,000 wounded.
August 29 » The United States passes the Philippine Autonomy Act.
November 5 » The Kingdom of Poland is proclaimed by the Act of 5th November of the emperors of Germany and Austria-Hungary.
Day of marriage May 30, 1941
The temperature on May 30, 1941 was between 9.7 °C and 13.1 °C and averaged 11.6 °C. There was 0.6 mm of rain during 0.6 hours. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
March 1 » World War II: Bulgaria signs the Tripartite Pact, allying itself with the Axis powers.
March 7 » Günther Prien and the crew of German submarine U-47, one of the most successful U-boats of World War II, disappear without a trace.
April 10 » World War II: The Axis powers establish the Independent State of Croatia.
May 15 » Joe DiMaggio begins a 56-game hitting streak.
May 31 » Anglo-Iraqi War: The United Kingdom completes the re-occupation of Iraq and returns 'Abd al-Ilah to power as regent for Faisal II.
December 12 » Adolf Hitler declares the imminent extermination of the Jews at a meeting in the Reich Chancellery.
Day of death November 14, 1968
The temperature on November 14, 1968 was between -3.0 °C and 3.6 °C and averaged 1.3 °C. There was 6.8 hours of sunshine (76%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 21 » Vietnam War: Battle of Khe Sanh: One of the most publicized and controversial battles of the war begins.
February 1 » The New York Central Railroad and the Pennsylvania Railroad are merged to form Penn Central Transportation.
April 3 » Martin Luther King Jr. delivers his "I've Been to the Mountaintop" speech. He was assassinated the next day.
May 26 » H-dagurinn in Iceland: Traffic changes from driving on the left to driving on the right overnight
November 17 » British European Airways introduces the BAC One-Eleven into commercial service.
November 17 » Viewers of the Raiders–Jets football game in the eastern United States are denied the opportunity to watch its exciting finish when NBC broadcasts Heidi instead, prompting changes to sports broadcasting in the U.S.
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/I44532.php : accessed January 30, 2026), "Heiko Poort (1916-1968)".
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