Peniamina Gospel Day is observed in Niue on October 27, celebrating the island's conversion to Christianity. This public holiday commemorates the efforts of Peniamina Nukai, who returned to Niue on October 26, 1846, after being educated and converted by missionary Dr. George Turner in Samoa. Upon his return, Peniamina preached to the Niueans, leading many to adopt Christian beliefs. Today, the majority of Niueans are Christians, primarily belonging to the Congregational Church of Niue, along with other denominations such as Latter-day Saints, Catholics, and Jehovah's Witnesses. The holiday reflects the significant impact of Christian teachings on the culture and community of Niue.