The temperature on May 26, 1886 was about 14.1 °C. There was 10 mm of rain. The air pressure was 14 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 79%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 23 » Charles Martin Hall produced the first samples of aluminium from the electrolysis of aluminium oxide, after several years of intensive work. He was assisted in this project by his older sister, Julia Brainerd Hall.
May 1 » Rallies are held throughout the United States demanding the eight-hour work day, culminating in the Haymarket affair in Chicago, in commemoration of which May 1 is celebrated as International Workers' Day in many countries.
May 4 » Haymarket affair: A bomb is thrown at policemen trying to break up a labor rally in Chicago, United States, killing eight and wounding 60. The police fire into the crowd.
June 30 » The first transcontinental train trip across Canada departs from Montreal, Quebec. It arrives in Port Moody, British Columbia on July 4.
July 3 » Karl Benz officially unveils the Benz Patent-Motorwagen, the first purpose-built automobile.
November 14 » Friedrich Soennecken first developed the hole puncher, a type of office tool capable of punching small holes in paper.
Day of death May 21, 1942
The temperature on May 21, 1942 was between 8.0 °C and 15.2 °C and averaged 12.5 °C. There was 1.4 mm of rain during 3.3 hours. There was 1.5 hours of sunshine (9%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 11 » World War II: Japanese forces attack Tarakan in Borneo, Netherlands Indies (Battle of Tarakan)
February 19 » World War II: United States President Franklin D. Roosevelt signs executive order 9066, allowing the United States military to relocate Japanese Americans to internment camps.
May 27 » World War II: In Operation Anthropoid, Reinhard Heydrich is fatally wounded in Prague; he dies of his injuries eight days later.
June 4 » World War II: The Battle of Midway begins. The Japanese Admiral Chūichi Nagumo orders a strike on Midway Island by much of the Imperial Japanese Navy.
September 12 » World War II: RMS Laconia, carrying civilians, Allied soldiers and Italian POWs is torpedoed off the coast of West Africa and sinks with a heavy loss of life.
November 8 » World War II: French Resistance coup in Algiers, in which 400 civilian French patriots neutralize Vichyist XIXth Army Corps after 15 hours of fighting, and arrest several Vichyist generals, allowing the immediate success of Operation Torch in Algiers.
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/I67160.php : accessed October 14, 2026), "Hendrik Pietens (1886-1942)".
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