| 53605 | May.10 | Event | 1849 – Astor Place Riot: A riot breaks out at the Astor Opera House in Manhattan, New York City over a dispute between actors Edwin Forrest and William Charles Macready, killing at least 25 and injuring over 120. |
| 53606 | May.10 | Event | 1857 – Indian Rebellion of 1857: In India, the first war of Independence begins. Sepoys mutiny against their commanding officers at Meerut. |
| 53607 | May.10 | Event | 1863 – American Civil War: Confederate General Thomas "Stonewall" Jackson dies eight days after he is accidentally shot by his own troops. |
| 53608 | May.10 | Event | 1864 – American Civil War: Colonel Emory Upton leads a 10-regiment "Attack-in-depth" assault against the Confederate works at The Battle of Spotsylvania, which, though ultimately unsuccessful, would provide the idea for the massive assault against the Blo |
| 53609 | May.10 | Event | 1865 – American Civil War: Jefferson Davis is captured by Union troops near Irwinville, Georgia. |
| 53610 | May.10 | Event | 1865 – American Civil War: In Kentucky, Union soldiers ambush and mortally wound Confederate raider William Quantrill, who lingers until his death on June 6. |
| 53581 | May.09 | Death | 2015 – Elizabeth Wilson, American actress (b. 1921) |
| 53582 | May.09 | Death | 2015 – Lo Wing-lok, Hong Kong physician and politician (b. 1954) |
| 53583 | May.09 | Holiday and observance | Anniversary of Dianetics (Church of Scientology) |
| 53584 | May.09 | Holiday and observance | Christian feast day:Beatus of LungernBeatus of VendomeChristopher (Eastern Orthodox Church)George PrecaGerontius of CerviaNicolaus Zinzendorf (Lutheran)Pachomius the GreatTudy of LandevennecMay 9 (Eastern Orthodox liturgics) |
| 53585 | May.09 | Holiday and observance | Commemoration of the end of the German occupation of the Channel Islands related observances:Liberation Day, commemorating the end of the German occupation of the Channel Islands during World War II. (Guernsey, Herm, Jersey, and Sark)National Day (Alderne |
| 53586 | May.09 | Holiday and observance | Europe Day, commemorating the Schuman Declaration. (European Union) |
| 53587 | May.09 | Holiday and observance | Victory Day observances, celebration of the Soviet Union victory over Nazi Germany (Soviet Union, Azerbaijan, Belarus, Bosnia and Herzegovina, Georgia, Israel, Kazakhstan, Kyrgyzstan, Moldova, Russia, Serbia, Tajikistan, Turkmenistan, Ukraine, Uzbekistan) |
| 53588 | May.10 | Event | 28 BCE – A sunspot is observed by Han dynasty astronomers during the reign of Emperor Cheng of Han, one of the earliest dated sunspot observations in China. |
| 53589 | May.10 | Event | 70 – Siege of Jerusalem: Titus, son of emperor Vespasian, opens a full-scale assault on Jerusalem and attacks the city's Third Wall to the northwest. |
| 53590 | May.10 | Event | 1291 – Scottish nobles recognize the authority of Edward I of England pending the selection of a king. |
| 53591 | May.10 | Event | 1497 – Amerigo Vespucci allegedly leaves Cádiz for his first voyage to the New World. |
| 53592 | May.10 | Event | 1503 – Christopher Columbus visits the Cayman Islands and names them Las Tortugas after the numerous turtles there. |
| 53593 | May.10 | Event | 1534 – Jacques Cartier visits Newfoundland. |
| 53594 | May.10 | Event | 1655 – England, with troops under the command of Admiral William Penn and General Robert Venables, annexes Jamaica from Spain. |
| 53595 | May.10 | Event | 1768 – John Wilkes is imprisoned for writing an article for The North Briton severely criticizing King George III. This action provokes rioting in London. |
| 53596 | May.10 | Event | 1773 – The Parliament of Great Britain passes the Tea Act, designed to save the British East India Company by granting it a monopoly on the North American tea trade. |
| 53597 | May.10 | Event | 1774 – Louis XVI and Marie Antoinette become King and Queen of France. |
| 53598 | May.10 | Event | 1775 – American Revolutionary War: A small Colonial militia led by Ethan Allen and Colonel Benedict Arnold captures Fort Ticonderoga. |
| 53599 | May.10 | Event | 1775 – American Revolutionary War: Representatives from the Thirteen Colonies begin the Second Continental Congress in Philadelphia. |
| 53600 | May.10 | Event | 1796 – War of the First Coalition: Napoleon I of France wins a decisive victory against Austrian forces at Lodi bridge over the Adda River in Italy. The Austrians lose some 2,000 men. |
| 53601 | May.10 | Event | 1801 – First Barbary War: The Barbary pirates of Tripoli declare war on the United States of America. |
| 53602 | May.10 | Event | 1824 – The National Gallery in London opens to the public. |
| 53603 | May.10 | Event | 1833 – The desecration of the grave of the viceroy of southern Vietnam Lê Văn Duyệt by Emperor Minh Mạng provokes his adopted son to start a revolt. |
| 53604 | May.10 | Event | 1837 – Panic of 1837: New York City banks fail, and unemployment reaches record levels. |