The temperature on October 11, 1865 was about 12.0 °C. The air pressure was 6 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 89%. 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 31 » American Civil War: Confederate General Robert E. Lee becomes general-in-chief.
March 4 » The third and final national flag of the Confederate States of America is adopted by the Confederate Congress.
April 14 » U.S. Secretary of State William H. Seward and his family are attacked at home by Lewis Powell.
July 30 » The steamboat Brother Jonathan sinks off the coast of Crescent City, California, killing 225 passengers, the deadliest shipwreck on the Pacific Coast of the U.S. at the time.
August 12 » Joseph Lister, British surgeon and scientist, performs 1st antiseptic surgery.
November 11 » Treaty of Sinchula is signed whereby Bhutan cedes the areas east of the Teesta River to the British East India Company.
When copying data from this family tree, please include a reference to the origin: Harry Westerman, "Family tree Westerman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-westerman/X1025.php : accessed February 14, 2026), "Roelof Sijtsema (1865-± 1936)".
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