The temperature on June 28, 1917 was between 11.9 °C and 23.0 °C and averaged 18.3 °C. There was 0.4 mm of rain. There was 7.9 hours of sunshine (47%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. 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.
January 11 » The Kingsland munitions factory explosion occurs as a result of sabotage.
March 16 » World War I: A German auxiliary cruiser is sunk in the Action of 16 March 1917.
April 9 » World War I: The Battle of Arras: The battle begins with Canadian Corps executing a massive assault on Vimy Ridge.
June 26 » World War I: The American Expeditionary Forces begin to arrive in France. They will first enter combat four months later.
July 20 » World War I: The Corfu Declaration, which leads to the creation of the post-war Kingdom of Yugoslavia, is signed by the Yugoslav Committee and Kingdom of Serbia.
November 2 » The Military Revolutionary Committee of the Petrograd Soviet, in charge of preparation and carrying out the Russian Revolution, holds its first meeting.
Day of death February 11, 1986
The temperature on February 11, 1986 was between -2.6 °C and 0.7 °C and averaged -1.3 °C. There was 1.3 hours of sunshine (13%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
April 28 » High levels of radiation resulting from the Chernobyl disaster are detected at a nuclear power plant in Sweden, leading Soviet authorities to publicly announce the accident.
May 2 » Chernobyl disaster: The City of Chernobyl is evacuated six days after the disaster.
August 31 » Aeroméxico Flight 498 collides with a Piper PA-28 Cherokee over Cerritos, California, killing 67 in the air and 15 on the ground.
October 5 » Mordechai Vanunu's story in The Sunday Times reveals Israel's secret nuclear weapons.
October 9 » The Phantom of the Opera, eventually the second longest running musical in London, opens at Her Majesty's Theatre.
October 11 » Ronald Reagan and Mikhail Gorbachev meet in Iceland to continue discussions about scaling back IRBM arsenals in Europe.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I3772.php : accessed March 15, 2026), "Jan de Graaf (1917-1986)".
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.