The temperature on December 19, 1909 was between -1.3 °C and 3.6 °C and averaged 1.2 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. 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 26 » Kinemacolor, the first successful color motion picture process, is first shown to the general public at the Palace Theatre in London.
April 14 » A massacre is organized by the Ottoman Empire against the Armenian population of Cilicia.
April 27 » Sultan of Ottoman Empire Abdul Hamid II is overthrown, and is succeeded by his brother, Mehmed V.
August 24 » Workers start pouring concrete for the Panama Canal.
November 18 » Two United States warships are sent to Nicaragua after 500 revolutionaries (including two Americans) are executed by order of José Santos Zelaya.
Day of death August 11, 1971
The temperature on August 11, 1971 was between 13.7 °C and 16.1 °C and averaged 14.9 °C. There was 0.5 mm of rain during 1.0 hours. There was 1.3 hours of sunshine (9%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 8 » The NASDAQ stock market index opens for the first time.
March 18 » Peru: a landslide crashes into Yanawayin Lake, killing 200 people at the mining camp of Chungar.
March 26 » East Pakistan declares its independence from Pakistan to form Bangladesh and the Bangladesh Liberation War begins.
November 6 » The United States Atomic Energy Commission tests the largest U.S. underground hydrogen bomb, code-named Cannikin, on Amchitka Island in the Aleutians.
November 15 » Intel releases the world's first commercial single-chip microprocessor, the 4004.
December 2 » Abu Dhabi, Ajman, Fujairah, Sharjah, Dubai, and Umm al-Quwain form the United Arab Emirates.
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/I116182.php : accessed December 27, 2025), "Korneliske Helfrich (1909-1971)".
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