The temperature on October 11, 1861 was about 16.5 °C. The air pressure was 2 kgf/m2 and came mainly from the south-southeast. The airpressure was 75 cm mercury. The atmospheric humidity was 92%. Source: KNMI
From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
From March 14, 1861 till January 31, 1862 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Loudon with the prime ministers Mr. J.P.P. baron Van Zuijlen van Nijevelt (conservatief-liberaal) and Mr. J. Loudon (liberaal).
March 3 » Alexander II of Russia signs the Emancipation Manifesto, freeing serfs.
March 10 » El Hadj Umar Tall seizes the city of Ségou, destroying the Bamana Empire of Mali.
March 21 » Alexander Stephens gives the Cornerstone Speech.
April 12 » American Civil War: Battle of Fort Sumter. The war begins with Confederate forces firing on Fort Sumter, in the harbor of Charleston, South Carolina.
August 19 » First ascent of Weisshorn, fifth highest summit in the Alps.
August 28 » American Civil War: Union forces attack Cape Hatteras, North Carolina in the Battle of Hatteras Inlet Batteries which lasts for two days.
Day of death February 18, 1912
The temperature on February 18, 1912 was between 2.2 °C and 11.5 °C and averaged 7.0 °C. There was 1.8 hours of sunshine (18%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 5 » The 6th All-Russian Conference of the Russian Social Democratic Labour Party (Prague Party Conference) opens. In the course of the conference, Vladimir Lenin and his supporters break from the rest of the party to form the Bolshevik movement.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
April 2 » The ill-fated RMSTitanic begins sea trials.
April 20 » Opening day for baseball's Tiger Stadium in Detroit, and Fenway Park in Boston.
October 7 » The Helsinki Stock Exchange sees its first transaction.
November 2 » Bulgaria defeats the Ottoman Empire in the Battle of Lule Burgas, the bloodiest battle of the First Balkan War, which opens her way to Constantinople.
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/I209729.php : accessed October 13, 2026), "Roelf Veenstra (1861-1912)".
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