The temperature on October 7, 1909 was between 3.6 °C and 16.3 °C and averaged 10.2 °C. There was 8.1 hours of sunshine (72%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 23 » RMSRepublic, a passenger ship of the White Star Line, becomes the first ship to use the CQD distress signal after colliding with another ship, the SS Florida, off the Massachusetts coastline, an event that kills six people. The Republic sinks the next day.
February 2 » The Paris Film Congress opens. An attempt by European producers to form an equivalent to the MPCC cartel in the United States.
March 23 » Theodore Roosevelt leaves New York for a post-presidency safari in Africa. The trip is sponsored by the Smithsonian Institution and National Geographic Society.
August 19 » The first automobile race at the Indianapolis Motor Speedway.
August 30 » Burgess Shale fossils are discovered by Charles Doolittle Walcott.
September 30 » The Cunard Line's RMS Mauretania makes a record-breaking westbound crossing of the Atlantic, that will not be bettered for 20 years.
Day of death November 20, 1954
The temperature on November 20, 1954 was between -2.5 °C and 5.5 °C and averaged 1.5 °C. There was 5.6 hours of sunshine (65%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
January 7 » Georgetown-IBM experiment: The first public demonstration of a machine translation system is held in New York at the head office of IBM.
January 21 » The first nuclear-powered submarine, the USSNautilus, is launched in Groton, Connecticut by Mamie Eisenhower, the First Lady of the United States.
February 15 » Canada and the United States agree to construct the Distant Early Warning Line, a system of radar stations in the far northern Arctic regions of Canada and Alaska.
February 23 » The first mass inoculation of children against polio with the Salk vaccine begins in Pittsburgh.
October 27 » Benjamin O. Davis, Jr. becomes the first African-American general in the United States Air Force.
November 10 » U.S. President Dwight D. Eisenhower dedicates the USMC War Memorial (Iwo Jima memorial) in Arlington Ridge Park in Arlington County, Virginia.
When copying data from this family tree, please include a reference to the origin: Gijsbertus Cornelis (Bert) Severijn, "Family tree Severijn", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-severijn/I4943.php : accessed February 2, 2026), "Pieter Opten (1884-1954)".
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