The temperature on October 17, 1911 was between 2.3 °C and 14.8 °C and averaged 8.0 °C. There was 9.0 hours of sunshine (85%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
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 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
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.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
Day of marriage December 23, 1937
The temperature on December 23, 1937 was between 1.2 °C and 8.7 °C and averaged 5.7 °C. There was 1.5 mm of rain during 1.3 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 19 » Howard Hughes sets a new air record by flying from Los Angeles to New York City in 7 hours, 28 minutes, 25 seconds.
February 16 » Wallace H. Carothers receives a United States patent for nylon.
May 28 » Volkswagen, the German automobile manufacturer is founded.
August 14 » The beginning of air-to-air combat of the Second Sino-Japanese War and World War II in general, when six Japanese bombers are shot down by Chinese fighters while raiding Chinese air bases.
September 10 » Nine nations attend the Nyon Conference to address international piracy in the Mediterranean Sea.
November 8 » The Nazi exhibition Der ewige Jude ("The Eternal Jew") opens in Munich.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I136087.php : accessed October 18, 2026), "Maria de Jager (1911-)".
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