National Alaska Day is observed worldwide every June 28 to honor Alaska’s admission as the 49th state of the United States. This celebration recognizes the history and culture of Alaska, which was purchased from Russia in 1867 for $7.2 million and officially joined the Union on January 3, 1959. The day is part of the National State Days project launched by National Day Calendar in 2017, which celebrates each state's heritage in the order they joined the Union. It is important to note that National Alaska Day should not be confused with Alaska Day, which is celebrated on October 18 to commemorate the formal transfer of Alaska from Russia. The observance highlights Alaska's unique status as a non-contiguous state and its rich indigenous history prior to European contact.