The temperature on July 26, 1868 was about 29.9 °C. The air pressure was 9 kgf/m2 and came mainly from the south east. The airpressure was 76 cm mercury. The atmospheric humidity was 32%. Source: KNMI
From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
March 23 » The University of California is founded in Oakland, California when the Organic Act is signed into law.
April 11 » Former shōgun Tokugawa Yoshinobu surrenders Edo Castle to Imperial forces, marking the end of the Tokugawa shogunate.
May 30 » Decoration Day (the predecessor of the modern "Memorial Day") is observed in the United States for the first time after a proclamation by John A. Logan, head of the Grand Army of the Republic (a veterans group).
June 1 » The Treaty of Bosque Redondo is signed, allowing the Navajo to return to their lands in Arizona and New Mexico.
June 10 » Mihailo Obrenović III, Prince of Serbia is assassinated.
August 18 » French astronomer Pierre Janssen discovers helium.
Day of marriage July 24, 1897
The temperature on July 24, 1897 was about 15.4 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 92%. Source: KNMI
January 31 » Czechoslav Trade Union Association is founded in Prague.
February 1 » Shinhan Bank, the oldest bank in South Korea, opens in Seoul.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
Day of death April 23, 1943
The temperature on April 23, 1943 was between 6.8 °C and 22.2 °C and averaged 14.9 °C. There was 1.6 mm of rain during 0.8 hours. There was 7.2 hours of sunshine (50%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. 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.
February 10 » World War II: Attempting to completely lift the Siege of Leningrad, the Soviet Red Army engages German troops and Spanish volunteers in the Battle of Krasny Bor.
February 14 » World War II: Tunisia Campaign: General Hans-Jürgen von Arnim's Fifth Panzer Army launches a concerted attack against Allied positions in Tunisia.
April 19 » World War II: In Poland, the Warsaw Ghetto Uprising begins, after German troops enter the Warsaw Ghetto to round up the remaining Jews.
September 7 » A fire at the Gulf Hotel in Houston kills 55 people.
October 1 » World War II: After the Four Days of Naples, Allied troops enter the city.
October 14 » World War II: The American Eighth Air Force loses 60 of 291 B-17 Flying Fortress during the Second Raid on Schweinfurt.
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/I33850.php : accessed February 12, 2026), "Siemon Zijlstra (1868-1943)".
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