January 31 » Czechoslav Trade Union Association is founded in Prague.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 6 » London becomes the world's first city to host licensed taxicabs.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage June 11, 1926
The temperature on June 11, 1926 was between 7.4 °C and 17.7 °C and averaged 12.5 °C. There was 2.8 mm of rain. There was 6.9 hours of sunshine (41%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
May 9 » Admiral Richard E. Byrd and Floyd Bennett claim to have flown over the North Pole (later discovery of Byrd's diary appears to cast some doubt on the claim.)
May 12 » The Italian-built airship Norge becomes the first vessel to fly over the North Pole.
May 25 » Sholom Schwartzbard assassinates Symon Petliura, the head of the government of the Ukrainian People's Republic, which is in government-in-exile in Paris.
August 6 » Gertrude Ederle becomes the first woman to swim across the English Channel.
December 17 » Antanas Smetona assumes power in Lithuania as the 1926 coup d'état is successful.
Day of death December 14, 1967
The temperature on December 14, 1967 was between 6.6 °C and 8.8 °C and averaged 7.6 °C. There was 1.0 mm of rain during 3.5 hours. The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
March 6 » Cold War: Joseph Stalin's daughter Svetlana Alliluyeva defects to the United States.
April 29 » After refusing induction into the United States Army the previous day, Muhammad Ali is stripped of his boxing title.
May 8 » The Philippine province of Davao is split into three: Davao del Norte, Davao del Sur, and Davao Oriental.
May 30 » The Nigerian Eastern Region declares independence as the Republic of Biafra, sparking a civil war.
August 24 » Led by Abbie Hoffman, the Youth International Party temporarily disrupts trading at the New York Stock Exchange by throwing dollar bills from the viewing gallery, causing trading to cease as brokers scramble to grab them.
November 9 » Apollo program: NASA launches the unmanned Apollo 4 test spacecraft atop the first Saturn V rocket from Cape Kennedy, Florida.
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/I181670.php : accessed February 12, 2026), "Oebele Ypenga (1897-1967)".
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