The temperature on December 8, 1909 was between -0.1 °C and 2.9 °C and averaged 1.6 °C. There was 1.2 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 28 » United States troops leave Cuba with the exception of Guantanamo Bay Naval Base after being there since the Spanish–American War.
April 6 » Robert Peary and Matthew Henson become the first people to reach the North Pole; Peary's claim has been disputed because of failings in his navigational ability.
April 11 » The city of Tel Aviv is founded.
April 18 » Joan of Arc is beatified in Rome.
August 30 » Burgess Shale fossils are discovered by Charles Doolittle Walcott.
September 20 » The South Africa Act 1909 creates the Union of South Africa from the British Colonies from four smaller colonies.
Day of death January 29, 1961
The temperature on January 29, 1961 was between 4.2 °C and 8.8 °C and averaged 7.0 °C. There was 3.2 mm of rain during 5.5 hours. There was -0.1 hours of sunshine (0%). The heavily clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
January 3 » The SL-1 nuclear reactor is destroyed by a steam explosion in the only reactor incident in the United States to cause immediate fatalities.
March 1 » United States President John F. Kennedy establishes the Peace Corps.
March 30 » The Single Convention on Narcotic Drugs is signed in New York City.
August 21 » American country music singer Patsy Cline returns to record producer Owen Bradley's studio in Nashville, Tennessee to record her vocals to Willie Nelson's "Crazy", which would become her signature song.
September 12 » The African and Malagasy Union is founded.
September 17 » The world's first retractable roof stadium, the Civic Arena, opens in Pittsburgh, Pennsylvania.
Day of burial February 2, 1961
The temperature on February 2, 1961 was between 0.6 °C and 4.4 °C and averaged 2.7 °C. There was 5.2 mm of rain during 6.1 hours. The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
March 14 » A USAF B-52 bomber crashes near near Yuba City, California whilst carrying nuclear weapons.
March 15 » At the 1961 Commonwealth Prime Ministers' Conference, South Africa announces that it will withdraw from the Commonwealth when the South African Constitution of 1961 comes into effect.
April 11 » The trial of Adolf Eichmann begins in Jerusalem.
September 16 » The United States National Hurricane Research Project drops eight cylinders of silver iodide into the eyewall of Hurricane Esther. Wind speed reduces by 10%, giving rise to Project Stormfury.
September 18 » U.N. Secretary-General Dag Hammarskjöld dies in an air crash while attempting to negotiate peace in the Katanga region of the Democratic Republic of the Congo.
October 20 » The Soviet Union performs the first armed test of a submarine-launched ballistic missile, launching an R-13 from a Golf-class submarine.
When copying data from this family tree, please include a reference to the origin: Paul Potten, "Family tree Potten", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-potten/I70.php : accessed January 11, 2026), "Maria Petronella Antonia "Mie" Potten (1909-1961)".
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