The temperature on February 19, 1927 was between -5.4 °C and 2.5 °C and averaged -1.9 °C. There was 8.3 hours of sunshine (82%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
March 29 » Sunbeam 1000hp breaks the land speed record at Daytona Beach, Florida.
April 12 » Shanghai massacre of 1927: Chiang Kai-shek orders the Chinese Communist Party members executed in Shanghai, ending the First United Front.
April 27 » Carabineros de Chile (Chilean national police force and gendarmerie) are created.
May 1 » The Union Labor Life Insurance Company is founded by the American Federation of Labor.
August 7 » The Peace Bridge opens between Fort Erie, Ontario and Buffalo, New York.
Day of death January 7, 2018
The temperature on January 7, 2018 was between -1.2 °C and 3.1 °C and averaged 1.0 °C. There was 6.2 hours of sunshine (78%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 13 » A false emergency alert warning of an impending missile strike in Hawaii caused widespread panic in the state.
January 31 » Both a blue moon and a total lunar eclipse occur.
February 14 » A shooting at Marjory Stoneman Douglas High School in Parkland, Florida is one of the deadliest school massacres with 17 fatalities and 15 injuries.
May 25 » Ireland votes to repeal the Eighth Amendment of their constitution that prohibits abortion in all but a few cases, choosing to replace it with the Thirty-sixth Amendment of the Constitution of Ireland.
August 3 » Two burka-clad men kill 29 people and injure more than 80 in a suicide attack on a Shia mosque in eastern Afghanistan.
December 31 » Thirty-nine people are killed after a ten-storey building collapsed in the industrial city of Magnitogorsk, Russia.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3593.php : accessed January 17, 2026), "Dorothea Anna "Dora" IJsselmuiden (1927-2018)".
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