The temperature on February 17, 1880 was about 8.9 °C. There was 2 mm of rain. The air pressure was 18 kgf/m2 and came mainly from the south-southeast. The airpressure was 74 cm mercury. The atmospheric humidity was 86%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
January 27 » Thomas Edison receives a patent for his incandescent lamp.
February 13 » Thomas Edison observes Thermionic emission.
July 27 » Second Anglo-Afghan War: Battle of Maiwand: Afghan forces led by Mohammad Ayub Khan defeat the British Army in battle near Maiwand, Afghanistan.
August 14 » Construction of Cologne Cathedral, the most famous landmark in Cologne, Germany, is completed.
September 16 » The Cornell Daily Sun prints its first issue in Ithaca, New York. The Sun is the United States' oldest, continuously-independent college daily.
December 16 » Outbreak of the First Boer War between the Boer South African Republic and the British Empire.
Day of death July 23, 1969
The temperature on July 23, 1969 was between 15.0 °C and 31.1 °C and averaged 24.1 °C. There was 11.8 hours of sunshine (74%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
March 25 » During their honeymoon, John Lennon and Yoko Ono hold their first Bed-In for Peace at the Amsterdam Hilton Hotel (until March 31).
April 7 » The Internet's symbolic birth date: Publication of RFC 1.
April 17 » Sirhan Sirhan is convicted of assassinating Robert F. Kennedy.
August 13 » The Apollo 11 astronauts enjoy a ticker tape parade in New York City. That evening, at a state dinner in Los Angeles, they are awarded the Presidential Medal of Freedom by U.S. President Richard Nixon.
September 9 » In Canada, the Official Languages Act comes into force, making French equal to English throughout the Federal government.
November 3 » Vietnam War: U.S. President Richard M. Nixon addresses the nation on television and radio, asking the "silent majority" to join him in solidarity on the Vietnam War effort and to support his policies.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I6606.php : accessed January 23, 2026), "Pieter Hendrik Rudolph du Plooy (1880-1969)".
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