The temperature on October 20, 1911 was between 9.3 °C and 17.4 °C and averaged 13.0 °C. There was 1.3 mm of rain. There was 2.9 hours of sunshine (28%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 23 » The New York Public Library is dedicated.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
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.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I31229.php : accessed March 1, 2026), "Johannis Adriaan van 't Zelfde (± 1873-????)".
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