Alaska Day is celebrated on October 18 each year to commemorate the formal transfer of Alaska from Russia to the United States in 1867. This event marked the end of Russian colonial rule and the beginning of American governance in the region. The day is recognized as a state holiday in Alaska and is often marked by various festivities and educational activities. The transfer was formalized through the signing of the Treaty of Cession, which was negotiated by U.S. Secretary of State William H. Seward. Alaska Day serves as a reminder of the historical significance of this acquisition and the cultural heritage of the Alaska Native peoples.