The temperature on September 13, 1917 was between 8.9 °C and 16.4 °C and averaged 12.9 °C. There was 4.3 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) 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 15 » Tsar Nicholas II of Russia abdicates the Russian throne ending the 304-year Romanov dynasty.
April 9 » World War I: The Battle of Arras: The battle begins with Canadian Corps executing a massive assault on Vimy Ridge.
June 11 » King Alexander assumes the throne of Greece after his father, Constantine I, abdicates under pressure from allied armies occupying Athens.
July 27 » World War I: The Allies reach the Yser Canal at the Battle of Passchendaele.
November 2 » The Military Revolutionary Committee of the Petrograd Soviet, in charge of preparation and carrying out the Russian Revolution, holds its first meeting.
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.
Day of death April 23, 1975
The temperature on April 23, 1975 was between 6.9 °C and 13.1 °C and averaged 9.5 °C. There was 0.1 hours of sunshine (1%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
February 13 » Fire at One World Trade Center (North Tower) of the World Trade Center in New York.
March 25 » Faisal of Saudi Arabia is shot and killed by a mentally ill nephew.
June 12 » India, Judge Jagmohanlal Sinha of the city of Allahabad ruled that India's Prime Minister Indira Gandhi had used corrupt practices to win her seat in the Indian Parliament, and that she should be banned from holding any public office. Mrs. Gandhi sent word that she refused to resign.
July 5 » Arthur Ashe becomes the first black man to win the Wimbledon singles title.
September 5 » Sacramento, California: Lynette Fromme attempts to assassinate U.S. President Gerald Ford.
October 14 » An RAF Avro Vulcan bomber explodes and crashes over Żabbar, Malta after an aborted landing, killing five crew members and one person on the ground.
When copying data from this family tree, please include a reference to the origin: Wander Slomp, "Family tree Slomp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-slomp/I205.php : accessed February 21, 2026), "Roelof Slomp (1917-1975)".
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