The temperature on October 30, 1904 was between 4.0 °C and 9.2 °C and averaged 6.4 °C. There was 2.2 hours of sunshine (23%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
February 7 » A fire begins in Baltimore, Maryland; it destroys over 1,500 buildings in 30 hours.
February 8 » Aceh War: Dutch Colonial Army's Marechaussee regiment led by General G.C.E. van Daalen launch military campaign to capture Gayo Highland, Alas Highland, and Batak Highland in Dutch East Indies' Northern Sumatra region, which ends with genocide to Acehnese and Bataks people.
June 15 » A fire aboard the steamboat SSGeneral Slocum in New York City's East River kills 1,000.
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).
December 7 » Comparative fuel trials begin between warships HMSSpiteful and HMSPeterel: Spiteful was the first warship powered solely by fuel oil, and the trials led to the obsolescence of coal in ships of the Royal Navy.
Day of marriage December 31, 1935
The temperature on December 31, 1935 was between 7.7 °C and 9.2 °C and averaged 8.2 °C. There was 7.3 mm of rain during 12.8 hours. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
February 26 » Robert Watson-Watt carries out a demonstration near Daventry which leads directly to the development of radar in the United Kingdom.
April 14 » The Black Sunday dust storm, considered one of the worst storms of the Dust Bowl, swept across the Oklahoma and Texas panhandles and neighboring areas.
June 10 » Chaco War ends: A truce is called between Bolivia and Paraguay who had been fighting since 1932.
October 20 » The Long March, a mammoth retreat undertaken by the armed forces of the Chinese Communist Party a year prior, ends.
December 5 » Mary McLeod Bethune founds the National Council of Negro Women in New York City.
December 30 » The Italian Air Force bombs a Swedish Red Cross hospital during the Second Italo-Abyssinian War.
Day of death June 17, 1954
The temperature on June 17, 1954 was between 12.0 °C and 19.9 °C and averaged 16.0 °C. There was 0.4 mm of rain during 1.2 hours. There was 4.1 hours of sunshine (24%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I14273.php : accessed January 30, 2026), "Petrus Adriaan Dreyer (1904-1954)".
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