The temperature on August 11, 1955 was between 14.1 °C and 25.2 °C and averaged 19.8 °C. There was 10.6 hours of sunshine (71%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
March 2 » Norodom Sihanouk, king of Cambodia, abdicates the throne in favor of his father, Norodom Suramarit.
April 12 » The polio vaccine, developed by Dr. Jonas Salk, is declared safe and effective.
June 16 » In a futile effort to topple Argentine President Juan Perón, rogue aircraft pilots of the Argentine Navy drop several bombs upon an unarmed crowd demonstrating in favor of Perón in Buenos Aires, killing 364 and injuring at least 800. At the same time on the ground, some soldiers attempt to stage a coup but are suppressed by loyal forces.
July 17 » Disneyland is dedicated and opened by Walt Disney in Anaheim, California.
July 27 » El Al Flight 402 is shot down by two fighter jets after straying into Bulgarian air space. All 58 people onboard are killed.
December 14 » Albania, Austria, Bulgaria, Cambodia, Ceylon, Finland, Hungary, Ireland, Italy, Jordan, Laos, Libya, Nepal, Portugal, Romania and Spain join the United Nations through United Nations Security Council Resolution 109.
Day of marriage August 17, 1979
The temperature on August 17, 1979 was between 12.2 °C and 18.9 °C and averaged 14.7 °C. There was 5.0 mm of rain during 1.1 hours. There was 1.1 hours of sunshine (8%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. 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.
June 18 » SALT II is signed by the United States and the Soviet Union.
September 1 » The American space probe Pioneer 11 becomes the first spacecraft to visit Saturn when it passes the planet at a distance of 21,000 kilometres (13,000mi).
October 17 » The Department of Education Organization Act creates the US Department of Education.
October 27 » Saint Vincent and the Grenadines gains its independence from the United Kingdom.
November 20 » Grand Mosque seizure: About 200 Sunni Muslims revolt in Saudi Arabia at the site of the Kaaba in Mecca during the pilgrimage and take about 6000 hostages. The Saudi government receives help from Pakistani special forces to put down the uprising.
December 9 » The eradication of the smallpox virus is certified, making smallpox the first of only two diseases that have been driven to extinction (rinderpest in 2011 being the other).
When copying data from this family tree, please include a reference to the origin: Gijsbertus Cornelis (Bert) Severijn, "Family tree Severijn", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-severijn/I11090.php : accessed February 1, 2026), "Rick Dykstra (1955-)".
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