The temperature on March 7, 1911 was between -1.6 °C and 8.6 °C and averaged 3.5 °C. There was 3.9 hours of sunshine (35%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I103638.php : accessed May 14, 2025), "Petrus Wilhelmus Kersten (1911-)".
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