The temperature on February 1, 1873 was about -2.6 °C. The air pressure was 6 kgf/m2 and came mainly from the east-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 67%. Source: KNMI
From July 6, 1872 till August 27, 1874 the Netherlands had a cabinet De Vries - Fransen van de Putte with the prime ministers Mr. G. de Vries Azn. (liberaal) and I.D. Fransen van de Putte (liberaal).
April 4 » The Kennel Club is founded, the oldest and first official registry of purebred dogs in the world.
May 20 » Levi Strauss and Jacob Davis receive a U.S. patent for blue jeans with copper rivets.
August 4 » American Indian Wars: While protecting a railroad survey party in Montana, the United States 7th Cavalry, under Lieutenant Colonel George Armstrong Custer clashes for the first time with the Cheyenne and Lakota people near the Tongue River; only one man on each side is killed.
September 1 » Cetshwayo ascends to the throne as king of the Zulu nation following the death of his father Mpande.
September 18 » The bank Jay Cooke & Company declares bankruptcy, contributing to the Panic of 1873.
October 9 » A meeting at the U.S. Naval Academy establishes the U.S. Naval Institute.
Day of death October 23, 1959
The temperature on October 23, 1959 was between 3.9 °C and 13.8 °C and averaged 9.8 °C. The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
June 14 » Disneyland Monorail System, the first daily operating monorail system in the Western Hemisphere, opens to the public in Anaheim, California.
June 23 » Convicted Manhattan Project spy Klaus Fuchs is released after only nine years in prison and allowed to emigrate to Dresden, East Germany where he resumes a scientific career.
August 14 » Founding and first official meeting of the American Football League.
September 16 » The first successful photocopier, the Xerox 914, is introduced in a demonstration on live television from New York City.
October 7 » The Soviet probe Luna 3 transmits the first-ever photographs of the far side of the Moon.
November 21 » American disc jockey Alan Freed, who had popularized the term "rock and roll" and music of that style, is fired from WABC-AM radio over allegations he had participated in the payola scandal.
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/I220258.php : accessed October 12, 2026), "Roelof de Groot (1873-1959)".
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