The temperature on May 25, 1909 was between 8.6 °C and 22.6 °C and averaged 15.1 °C. There was 17.8 mm of rain. There was 5.9 hours of sunshine (37%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
February 22 » The sixteen battleships of the Great White Fleet, led by USSConnecticut, return to the United States after a voyage around the world.
March 10 » By signing the Anglo-Siamese Treaty of 1909, Thailand relinquishes its sovereignty over the Malay states of Kedah, Kelantan, Perlis and Terengganu, which become British protectorates.
April 14 » A massacre is organized by the Ottoman Empire against the Armenian population of Cilicia.
May 31 » The National Negro Committee, forerunner to the National Association for the Advancement of Colored People (NAACP), convenes for the first time.
August 24 » Workers start pouring concrete for the Panama Canal.
Day of death November 23, 1968
The temperature on November 23, 1968 was between 2.5 °C and 10.0 °C and averaged 6.4 °C. There was 8.7 mm of rain during 6.3 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 22 » Operation Igloo White, a US electronic surveillance system to stop communist infiltration into South Vietnam begins installation.
April 6 » In Richmond, Indiana's downtown district, a double explosion kills 41 and injures 150.
April 11 » President Lyndon B. Johnson signs the Civil Rights Act of 1968, prohibiting discrimination in the sale, rental, and financing of housing.
October 11 » NASA launches Apollo 7, the first successful manned Apollo mission.
November 8 » The Vienna Convention on Road Traffic is signed to facilitate international road traffic and to increase road safety by standardising the uniform traffic rules among the signatories.
December 25 » Apollo program: Apollo 8 performs the first successful Trans-Earth injection (TEI) maneuver, sending the crew and spacecraft on a trajectory back to Earth from Lunar orbit.
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/I118022.php : accessed October 18, 2026), "Klaas Zwaagmans (1909-1968)".
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