The temperature on October 5, 1911 was between 7.1 °C and 11.9 °C and averaged 9.8 °C. There was 1.2 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
January 26 » Glenn Curtiss flies the first successful American seaplane.
April 27 » Following the resignation and death of William P. Frye, a compromise is reached to rotate the office of President pro tempore of the United States Senate.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 15 » More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
Day of marriage April 16, 1947
The temperature on April 16, 1947 was between 8.0 °C and 16.5 °C and averaged 11.0 °C. There was 4.1 hours of sunshine (29%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 6 » Pan American Airlines becomes the first commercial airline to offer a round-the-world ticket.
February 25 » The formal abolition of Prussia is proclaimed by the Allied Control Council, the Prussian government having already been abolished by the Preußenschlag of 1932.
April 1 » The only mutiny in the history of the Royal New Zealand Navy begins.
July 8 » Reports are broadcast that a UFO crash landed in Roswell, New Mexico in what became known as the Roswell UFO incident.
July 11 » The Exodus 1947 heads to Palestine from France.
November 17 » American scientists John Bardeen and Walter Houser Brattain observe the basic principles of the transistor, a key element for the electronics revolution of the 20th century.
Day of death September 7, 1971
The temperature on September 7, 1971 was between 8.3 °C and 22.5 °C and averaged 15.6 °C. There was 12.2 hours of sunshine (92%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
February 2 » The international Ramsar Convention for the conservation and sustainable utilization of wetlands is signed in Ramsar, Mazandaran, Iran.
March 8 » The Fight of the Century between Joe Frazier and Muhammad Ali commences. Frazier wins in 15 rounds via unanimous decision.
May 1 » Amtrak (the National Railroad Passenger Corporation) takes over operation of U.S. passenger rail service.
September 8 » In Washington, D.C., the John F. Kennedy Center for the Performing Arts is inaugurated, with the opening feature being the premiere of Leonard Bernstein's Mass.
September 9 » The four-day Attica Prison riot begins, eventually resulting in 39 dead, most killed by state troopers retaking the prison.
September 13 » Chairman Mao Zedong's second in command and successor Marshal Lin Biao flees the People's Republic of China after the failure of an alleged coup. His plane crashes in Mongolia, killing all aboard.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I116006.php : accessed October 17, 2026), "Ymkje Boersma (1911-1971)".
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