The temperature on April 23, 1915 was between 0.1 °C and 11.3 °C and averaged 6.5 °C. There was 9.0 hours of sunshine (63%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. 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 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
February 19 » World War I: The first naval attack on the Dardanelles begins when a strong Anglo-French task force bombards Ottoman artillery along the coast of Gallipoli.
May 23 » World War I: Italy joins the Allies, fulfilling its part of the Treaty of London.
July 5 » The Liberty Bell leaves Philadelphia by special train on its way to the Panama–Pacific International Exposition. This is the last trip outside Philadelphia that the custodians of the bell intend to permit.
September 5 » The pacifist Zimmerwald Conference begins.
October 14 » World War I: Bulgaria joins the Central Powers.
Day of death January 31, 1974
The temperature on January 31, 1974 was between 2.7 °C and 9.3 °C and averaged 6.0 °C. There was 0.7 mm of rain during 1.0 hours. There was 2.5 hours of sunshine (28%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. 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.
April 29 » Watergate scandal: United States President Richard Nixon announces the release of edited transcripts of White House tape recordings relating to the scandal.
July 20 » Turkish invasion of Cyprus: Forces from Turkey invade Cyprus after a coup d'état, organised by the dictator of Greece, against president Makarios.
August 7 » Philippe Petit performs a high wire act between the twin towers of the World Trade Center 1,368 feet (417m) in the air.
September 10 » Guinea-Bissau gains independence from Portugal.
November 16 » The Arecibo message is broadcast from the Arecibo Radio Telescope in Puerto Rico. It was aimed at the current location of the globular star cluster Messier 13 some 25,000 light years away. The message will reach empty space by the time it finally arrives since the cluster will have changed position.
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/I208030.php : accessed October 19, 2026), "Gerhardus Couperus (1915-1974)".
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