May 10 » American Revolutionary War: The Second Continental Congress takes place in Philadelphia.
May 20 » The Mecklenburg Declaration of Independence is allegedly signed in Charlotte, North Carolina.
July 27 » Founding of the U.S. Army Medical Department: The Second Continental Congress passes legislation establishing "an hospital for an army consisting of 20,000 men."
August 23 » American Revolutionary War: King George III delivers his Proclamation of Rebellion to the Court of St James's stating that the American colonies have proceeded to a state of open and avowed rebellion.
September 25 » American Revolution: Ethan Allen surrenders to British forces after attempting to capture Montreal during the Battle of Longue-Pointe.
December 31 » American Revolutionary War: Battle of Quebec: British forces repulse an attack by Continental Army General Richard Montgomery.
Day of death May 20, 1865
The temperature on May 20, 1865 was about 23.7 °C. The air pressure was 7.5 kgf/m2 and came mainly from the east-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 49%. 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: The United States Congress passes the Thirteenth Amendment to the United States Constitution, abolishing slavery and submits it to the states for ratification.
May 9 » American Civil War: President Andrew Johnson issues a proclamation ending belligerent rights of the rebels and enjoining foreign nations to intern or expel Confederate ships.
June 19 » Over two years after the Emancipation Proclamation, slaves in Galveston, Texas, United States, are finally informed of their freedom. The anniversary is still officially celebrated in Texas and 41 other contiguous states as Juneteenth.
June 28 » The Army of the Potomac is disbanded.
July 31 » The first narrow-gauge mainline railway in the world opens at Grandchester, Queensland, Australia.
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.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P8334.php : accessed January 2, 2026), "John Hay (1775-1865)".
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