The temperature on April 21, 1865 was about 24.5 °C. The air pressure was 7.5 kgf/m2 and came mainly from the east-southeast. The airpressure was 77 cm mercury. The atmospheric humidity was 26%. 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.
April 1 » American Civil War: Union troops led by Philip Sheridan decisively defeat Confederate troops led by George Pickett, cutting the Army of Northern Virginia's last supply line.
April 2 » American Civil War: Defeat at the Third Battle of Petersburg forces the Army of Northern Virginia and the Confederate government to abandon Richmond, Virginia.
April 15 » President Abraham Lincoln dies after being shot the previous evening by actor John Wilkes Booth. Vice President Andrew Johnson becomes President upon Lincoln's death.
April 20 » Astronomer Angelo Secchi demonstrates the Secchi disk, which measures water clarity, aboard Pope Pius IX's yacht, the L'Immaculata Concezion.
November 11 » Treaty of Sinchula is signed whereby Bhutan cedes the areas east of the Teesta River to the British East India Company.
December 1 » Shaw University, the first historically black university in the southern United States, is founded in Raleigh, North Carolina.
When copying data from this family tree, please include a reference to the origin: John van Os, "Family tree Van Os", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-os/I14745.php : accessed February 28, 2026), "Arie Notenboom (1840-????)".
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