Many countries have only one time zone. Some examples include:
- China: Despite its vast size, China uses a single time zone, Beijing Time, for the entire country.
- Iceland: This island nation in the North Atlantic Ocean uses Greenwich Mean Time (GMT).
- Kiribati: This island nation in the Pacific Ocean uses a single time zone, which is 14 hours ahead of Coordinated Universal Time (UTC).
- Nauru: This small island nation in the Pacific Ocean uses a single time zone, which is 12 hours ahead of UTC.
- Tuvalu: This island nation in the Pacific Ocean uses a single time zone, which is 12 hours ahead of UTC.
The decision to use only one time zone is often made for political or practical reasons. For example, China chose to use a single time zone to promote national unity and simplify communication.