The temperature on July 21, 1910 was between 14.2 °C and 17.7 °C and averaged 15.9 °C. There was 13.1 mm of rain. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
March 3 » Rockefeller Foundation: John D. Rockefeller Jr. announces his retirement from managing his businesses so that he can devote all his time to philanthropy.
March 8 » French aviator Raymonde de Laroche becomes the first woman to receive a pilot's license.
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
August 20 » Extremely dry and windy weather in the Inland Northwest of the United States causes several small wildfires to coalesce into the Great Fire of 1910, burning approximately 3million acres (12,000km) and killing 87 people.
September 20 » The ocean liner SSFrance, later known as the "Versailles of the Atlantic", is launched.
November 20 » Mexican Revolution: Francisco I. Madero issues the Plan de San Luis Potosí, denouncing Mexican President Porfirio Díaz, calling for a revolution to overthrow the government of Mexico, effectively starting the Mexican Revolution.
Day of marriage January 26, 1939
The temperature on January 26, 1939 was between 0.2 °C and 3.9 °C and averaged 2.4 °C. There was 4.7 mm of rain during 5.4 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
April 30 » The 1939–40 New York World's Fair opens.
June 12 » Shooting begins on Paramount Pictures' Dr. Cyclops, the first horror film photographed in three-strip Technicolor.
September 1 » The Wound Badge for Wehrmacht, SS, Kriegsmarine, and Luftwaffe soldiers is instituted. The final version of the Iron Cross is also instituted on this date.
September 1 » World War II: Nazi Germany and Slovakia invade Poland, beginning the European phase of World War II.
September 6 » World War II: South Africa declares war on Nazi Germany.
September 17 » World War II: German submarineU-29 sinks the British aircraft carrier HMSCourageous.
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/I168161.php : accessed October 24, 2026), "Sybren de Boer (1910-)".
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