The temperature on October 31, 1911 was between 5.1 °C and 11.7 °C and averaged 8.5 °C. There was 3.2 mm of rain. There was 6.4 hours of sunshine (66%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
December 27 » "Jana Gana Mana", the national anthem of India, is first sung in the Calcutta Session of the Indian National Congress.
When copying data from this family tree, please include a reference to the origin: Rudi Roijakkers, "Family tree Roijakkers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-roijakkers/I288.php : accessed August 9, 2025), "Jan Martinus van der Loo (1911-)".
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