The Day of Adoption of Crimea, Taman, and Kuban into the Russian Empire is officially observed in Russia every April 19. This observance commemorates the annexation of Crimea, Taman, and Kuban into the Russian Empire, which was formalized by Empress Catherine the Great in 1783. The annexation followed the defeat of the Ottoman Empire in the Russo-Turkish War and was largely unopposed due to the weakened state of the Crimean Khanate. The observance was established by the Russian parliament in 2018, following a draft law submitted by Valentina Matviyenko and other officials. The day serves to remember the historical significance of the annexation and the subsequent establishment of the Taurida Governorate.