Seventh Day Adventist is a religious denomination that originated in the 19th century in the United States. The church is known for its adherence to Sabbath observance on Saturday, rather than Sunday as in most other Christian denominations. There are various synonyms for Seventh Day Adventist, including Adventist, SDA, Advent Christian, Sabatarian, and Sabbath-keeping Christians. These terms are used interchangeably to refer to members of the denomination. While the Seventh Day Adventist Church is well-known for its unique beliefs and practices, its members are a diverse group with varying interpretations of its teachings and doctrines.