The temperature on June 4, 1914 was between 2.0 °C and 19.2 °C and averaged 11.3 °C. There was 0.1 mm of rain. There was 7.4 hours of sunshine (45%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. 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.
August 15 » The Panama Canal opens to traffic with the transit of the cargo ship SSAncon.
September 1 » St. Petersburg, Russia, changes its name to Petrograd.
October 27 » First World War: The new British battleship HMS Audacious is sunk by a minefield laid by the armed German merchant-cruiser Berlin.
October 29 » Ottoman entry into World War I.
December 15 » A gas explosion at Mitsubishi Hōjō coal mine, in Kyushu, Japan, kills 687.
Day of marriage February 17, 1949
The temperature on February 17, 1949 was between -0.1 °C and 11.9 °C and averaged 5.5 °C. There was 8.0 hours of sunshine (80%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
January 31 » These Are My Children, the first television daytime soap opera, is broadcast by the NBC station in Chicago.
March 2 » Captain James Gallagher lands his B-50 Superfortress Lucky Lady II in Fort Worth, Texas, after completing the first non-stop around-the-world airplane flight in 94 hours and one minute.
June 5 » Thailand elects Orapin Chaiyakan, the first female member of Thailand's Parliament.
September 30 » The Berlin Airlift ends.
November 18 » The Iva Valley Shooting occurs after the coal miners of Enugu in Nigeria go on strike over withheld wages; 21 miners are shot dead and 51 are wounded by police under the supervision of the British colonial administration of Nigeria.
November 26 » The Constituent Assembly of India adopts the constitution presented by Dr. B. R. Ambedkar.
Day of death June 21, 1980
The temperature on June 21, 1980 was between 10.5 °C and 17.4 °C and averaged 13.3 °C. There was 2.9 mm of rain during 0.9 hours. There was 4.3 hours of sunshine (26%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 21 » Iran Air Flight 291 crashes in the Alborz Mountains while on approach to Mehrabad International Airport in Tehran, Iran, killing 128 people.
February 23 » Iran hostage crisis: Supreme Leader Ayatollah Ruhollah Khomeini states that Iran's parliament will decide the fate of the American embassy hostages.
June 27 » The 'Ustica massacre': Itavia Flight 870 crashes in the sea while en route from Bologna to Palermo, Italy, killing all 81 on board.
July 8 » The inaugural 1980 State of Origin game is won by Queensland who defeat New South Wales 20–10 at Lang Park.
September 30 » Ethernet specifications are published by Xerox working with Intel and Digital Equipment Corporation.
December 24 » Witnesses report the first of several sightings of unexplained lights near RAF Woodbridge, in Rendlesham Forest, Suffolk, England, United Kingdom, an incident called "Britain's Roswell".
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I287614.php : accessed February 26, 2026), "Pieter Hindrik Vierkant (1914-1980)".
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