The temperature on December 8, 1904 was between -0.2 °C and 4.9 °C and averaged 2.7 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 7 » The distress signal "CQD" is established only to be replaced two years later by "SOS".
February 7 » A fire begins in Baltimore, Maryland; it destroys over 1,500 buildings in 30 hours.
April 30 » The Louisiana Purchase Exposition World's Fair opens in St. Louis, Missouri.
October 20 » Chile and Bolivia sign the Treaty of Peace and Friendship, delimiting the border between the two countries.
October 27 » The first underground New York City Subway line opens, later designated as the IRT Broadway–Seventh Avenue Line.
November 16 » English engineer John Ambrose Fleming receives a patent for the thermionic valve (vacuum tube).
Day of death March 23, 1989
The temperature on March 23, 1989 was between 3.4 °C and 8.9 °C and averaged 6.1 °C. There was 2.4 mm of rain during 3.9 hours. There was 6.2 hours of sunshine (50%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 1 » The Montreal Protocol comes into force, stopping the use of chemicals contributing to ozone depletion.
February 8 » Independent Air Flight 1851 strikes Pico Alto mountain while on approach to Santa Maria Airport (Azores) killing all 144 passengers on board.
March 24 » In Prince William Sound in Alaska, the Exxon Valdez spills 240,000 barrels (38,000m) of crude oil after running aground.
April 2 » ASUS corporation is founded.
April 3 » The US Supreme Court upholds the jurisdictional rights of tribal courts under the Indian Child Welfare Act of 1978 in Mississippi Choctaw Band v. Holyfield.
September 19 » A bomb destroys UTA Flight 772 in mid-air above the Tùnùrù Desert, Niger, killing all 170 passengers and crew.
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/I116183.php : accessed October 11, 2026), "Dirk Helfrich (1904-1989)".
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