The temperature on July 7, 1909 was between 10.4 °C and 17.9 °C and averaged 13.3 °C. There was 7.4 mm of rain. There was 2.7 hours of sunshine (16%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
February 12 » New Zealand's worst maritime disaster of the 20th century happens when the SSPenguin, an inter-island ferry, sinks and explodes at the entrance to Wellington Harbour.
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.
March 23 » Theodore Roosevelt leaves New York for a post-presidency safari in Africa. The trip is sponsored by the Smithsonian Institution and National Geographic Society.
April 14 » A massacre is organized by the Ottoman Empire against the Armenian population of Cilicia.
August 24 » Workers start pouring concrete for the Panama Canal.
October 26 » An Jung-geun assassinates Japan's Resident-General of Korea.
Day of marriage August 5, 1938
The temperature on August 5, 1938 was between 18.4 °C and 28.2 °C and averaged 22.5 °C. There was 20.0 mm of rain during 4.3 hours. There was 7.3 hours of sunshine (48%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
June 11 » Second Sino-Japanese War: The Battle of Wuhan starts.
June 25 » Dr. Douglas Hyde is inaugurated as the first President of Ireland.
July 3 » United States President Franklin D. Roosevelt dedicates the Eternal Light Peace Memorial and lights the eternal flame at Gettysburg Battlefield.
July 20 » The United States Department of Justice files suit in New York City against the motion picture industry charging violations of the Sherman Antitrust Act in regards to the studio system. The case would eventually result in a break-up of the industry in 1948.
September 30 » The League of Nations unanimously outlaws "intentional bombings of civilian populations".
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I34405.php : accessed February 25, 2026), "Grada van Zwam (1909-)".
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