The temperature on September 17, 1865 was about 22.0 °C. The air pressure was 2 kgf/m2 and came mainly from the north-northwest. The airpressure was 77 cm mercury. The atmospheric humidity was 76%. Source: KNMI
In The Netherlands , there was from February 1, 1862 to February 10, 1866 the cabinet Thorbecke II, with Mr. J.R. Thorbecke (liberaal) as prime minister.
January 15 » American Civil War: Fort Fisher in North Carolina falls to the Union, thus cutting off the last major seaport of the Confederacy.
June 11 » The Naval Battle of the Riachuelo is fought on the rivulet Riachuelo (Argentina), between the Paraguayan Navy on one side and the Brazilian Navy on the other. The Brazilian victory was crucial for the later success of the Triple Alliance (Brazil, Uruguay, and Argentina) in the Paraguayan War.
July 14 » First ascent of the Matterhorn by Edward Whymper and party, four of whom die on the descent.
August 12 » Joseph Lister, British surgeon and scientist, performs 1st antiseptic surgery.
November 18 » Mark Twain's short story "The Celebrated Jumping Frog of Calaveras County" is published in the New York Saturday Press.
December 4 » North Carolina ratifies 13th Amendment to the U.S. Constitution, followed soon by Georgia, and U.S. slaves were legally free within two weeks.
Day of death April 9, 1934
The temperature on April 9, 1934 was between 5.3 °C and 13.4 °C and averaged 9.7 °C. There was 1.7 mm of rain during 2.0 hours. There was 0.6 hours of sunshine (4%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
March 24 » United States Congress passes the Tydings-McDuffie Act, allowing the Philippines to become a self-governing commonwealth.
May 15 » Kārlis Ulmanis establishes an authoritarian government in Latvia.
June 30 » The Night of the Long Knives, Adolf Hitler's violent purge of his political rivals in Germany, takes place.
July 20 » West Coast waterfront strike: In Seattle, police fire tear gas on and club 2,000 striking longshoremen. The governor of Oregon calls out the National Guard to break a strike on the Portland docks.
August 22 » Bill Woodfull of Australia becomes the only cricket captain to twice regain The Ashes.
December 11 » Bill Wilson, co-founder of Alcoholics Anonymous, takes his last drink and enters treatment for the final time.
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/I47861.php : accessed October 23, 2026), "Hendrik de Graaf (1865-1934)".
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