The temperature on January 21, 1917 was between -8.6 °C and -3.0 °C and averaged -6.7 °C. There was 7.2 hours of sunshine (85%). The average windspeed was 4 Bft (moderate breeze) 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 31 » World War I: Germany announces that its U-boats will resume unrestricted submarine warfare after a two-year hiatus.
July 25 » Sir Robert Borden introduces the first income tax in Canada as a "temporary" measure (lowest bracket is 4% and highest is 25%).
August 18 » A Great Fire in Thessaloniki, Greece destroys 32% of the city leaving 70,000 individuals homeless.
September 26 » World War I: The Battle of Polygon Wood begins.
November 26 » The Manchester Guardian publishes the 1916 secret Sykes-Picot Agreement between the United Kingdom and France.
November 26 » The National Hockey League is formed, with the Montreal Canadiens, Montreal Wanderers, Ottawa Senators, Quebec Bulldogs, and Toronto Arenas as its first teams.
Day of death April 23, 1974
The temperature on April 23, 1974 was between 0.2 °C and 10.7 °C and averaged 6.0 °C. There was 1.6 mm of rain during 1.3 hours. There was 4.0 hours of sunshine (28%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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 1 » A fire in the 25-story Joelma Building in São Paulo, Brazil kills 189 and injures 293.
March 1 » Watergate scandal: Seven are indicted for their role in the Watergate break-in and charged with conspiracy to obstruct justice.
May 17 » Police in Los Angeles raid the Symbionese Liberation Army's headquarters, killing six members, including Camilla Hall.
July 30 » Watergate scandal: U.S. President Richard Nixon releases subpoenaed White House recordings after being ordered to do so by the Supreme Court of the United States.
August 5 » Vietnam War: The U.S. Congress places a $1billion limit on military aid to South Vietnam.
December 13 » Malta becomes a republic within the Commonwealth of Nations.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I136642.php : accessed October 16, 2026), "Klaas Ritskes (1917-1974)".
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