| 1525 | | The Catholic princes of Germany form the Dessau League to fight against the Reformation. |
| 1545 | | King Henry VIII of England watches his flagship, Mary Rose, capsize as it leaves to battle the French. |
| 1788 | | Prices plunge on the Paris stock market. |
| 1799 | | The Rosetta Stone, a tablet with hieroglyphic translations into Greek, is found in Egypt. |
| 1848 | | The first Women's Rights Convention convenes in Seneca Falls, N.Y, organized by Lucretia Mott and Elizabeth Cady Stanton. |
| 1870 | | France declares war on Prussia. |
| 1942 | | German U-boats are withdrawn from positions off the U.S. Atlantic coast due to American anti-submarine countermeasures. |
| 1943 | | More than 150 B-17 and 112 B-24 bombers attack Rome for the first time. |
| 1975 | | Apollo and Soyuz spacecrafts dock in orbit. |
