The Seventh-day Adventist Church (abbreviated SDA) is a denomination that grew out of the prophetic Millerite movement in the United States during the middle part of the 19th century. It considers itself a branch of Protestant Christianity, though differences in doctrine and practice have led some mainstream Christians to dispute that designation.
The name of the Seventh-day Adventist denomination indicates tow of its distinctive characteristics: Sabbath observance on the seventh day (Saturday) and a belief in a literal, personal, visible, and worldwide second coming of Christ to earth.
Other distinguishing characteristics include adherence to the teachings of Ellen G. White (who is regarded as a prophet), belief in an investigative judgment prior to Christ's second coming, and various dietary observances rooted in Jewish law.