Battle of Tendra Day is observed in the Russian Armed Forces on September 11 to commemorate the naval Battle of Tendra, which occurred during the Russo-Turkish War of 1787-1792. This day is part of the Days of Military Honor, established in 1995 by federal law to recognize Russia's significant military victories. The Battle of Tendra, fought near the Tendra Spit in the Black Sea, saw the Russian fleet, led by Fyodor Ushakov, defeat the larger Ottoman fleet, resulting in approximately 25 Russian casualties compared to over 2,000 Ottoman losses, along with the capture of 733 Ottoman soldiers. The victory allowed the Russian Empire to gain control over the Black Sea, marking it as one of Ushakov's notable achievements. While not a public holiday, the day is celebrated within military circles to honor this important historical event.