The temperature on October 1, 1911 was between 5.2 °C and 14.1 °C and averaged 9.6 °C. There was 12.7 mm of rain. There was 5.1 hours of sunshine (44%). The average windspeed was 6 Bft (strong wind) and was prevailing from the north-northwest. Source: KNMI
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 15 » More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
September 24 » His Majesty's Airship No. 1, Britain's first rigid airship, is wrecked by strong winds before her maiden flight at Barrow-in-Furness.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
Day of death July 12, 1926
The temperature on July 12, 1926 was between 11.1 °C and 24.6 °C and averaged 18.8 °C. There was 9.6 hours of sunshine (58%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 8 » Crown Prince Nguyễn Phúc Vĩnh Thuỵ ascends the throne to become the last monarch of Vietnam.
January 26 » The first demonstration of the television by John Logie Baird.
March 15 » The dictator Theodoros Pangalos is elected President of Greece without opposition.
April 6 » Varney Airlines makes its first commercial flight (Varney is the root company of United Airlines).
April 24 » The Treaty of Berlin is signed. Germany and the Soviet Union each pledge neutrality in the event of an attack on the other by a third party for the next five years.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I17718.php : accessed March 14, 2026), "Arij Heijkoop (1911-1926)".
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