The temperature on January 4, 1927 was between 0.3 °C and 5.6 °C and averaged 2.6 °C. There was 2.3 mm of rain. There was 3.8 hours of sunshine (48%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
March 29 » Sunbeam 1000hp breaks the land speed record at Daytona Beach, Florida.
April 30 » The Federal Industrial Institute for Women opens in Alderson, West Virginia, as the first women's federal prison in the United States.
May 20 » Treaty of Jeddah: The United Kingdom recognizes the sovereignty of King Ibn Saud in the Kingdoms of Hejaz and Nejd, which later merge to become the Kingdom of Saudi Arabia.
June 13 » Aviator Charles Lindbergh receives a ticker tape parade down 5th Avenue in New York City.
June 26 » The Cyclone roller coaster opens on Coney Island.
Day of marriage January 9, 1960
The temperature on January 9, 1960 was between -4.5 °C and -0.4 °C and averaged -2.5 °C. There was 6.1 hours of sunshine (76%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
February 13 » With the success of a nuclear test codenamed "Gerboise Bleue", France becomes the fourth country to possess nuclear weapons.
March 22 » Arthur Leonard Schawlow and Charles Hard Townes receive the first patent for a laser.
July 1 » Independence of Somalia.
August 5 » Burkina Faso, then known as Upper Volta, becomes independent from France.
September 5 » Poet Léopold Sédar Senghor is the first elected President of Senegal.
November 25 » The Mirabal sisters of the Dominican Republic are assassinated.
Day of death April 19, 1985
The temperature on April 19, 1985 was between 5.5 °C and 19.1 °C and averaged 12.7 °C. There was 10.9 hours of sunshine (77%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
March 20 » Libby Riddles becomes the first woman to win the 1,135-mile Iditarod Trail Sled Dog Race.
September 2 » Sri Lankan Civil War: Sri Lankan Tamil politicians and former MPs M. Alalasundaram and V. Dharmalingam are shot dead.
October 29 » Major General Samuel K. Doe is announced the winner of the first multi-party election in Liberia.
November 19 » Pennzoil wins a US$10.53 billion judgment against Texaco, in the largest civil verdict in the history of the United States, stemming from Texaco executing a contract to buy Getty Oil after Pennzoil had entered into an unsigned, yet still binding, buyout contract with Getty.
December 8 » The South Asian Association for Regional Cooperation, the regional intergovernmental organization and geopolitical union in South Asia is established.
December 14 » Wilma Mankiller takes office as the first woman elected to serve as Principal Chief of the Cherokee Nation.
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/I14821.php : accessed February 23, 2026), "Christiaan Frederik Dreyer (1927-1985)".
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