The temperature on April 24, 1911 was between 7.3 °C and 14.1 °C and averaged 10.4 °C. There was 10.1 hours of sunshine (70%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
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 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
September 29 » Italy declares war on the Ottoman Empire.
When copying data from this family tree, please include a reference to the origin: Jac. Linders, "Family tree Linders", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_linders/I11310.php : accessed March 6, 2026), "Gradus Derks (1882-????)".
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