Universal Time Coordinated (UTC)

Universal Time Coordinated (UTC) is the primary time standard used worldwide for regulating clocks and timekeeping. It combines precise measurements of Earth's rotation with atomic time, providing a consistent and reliable reference. While UTC is closely aligned with Greenwich Mean Time (GMT), it incorporates leap seconds to stay synchronized with Earth's changes in rotation. This standard is essential for international communication, navigation, aviation, and many scientific applications, ensuring everyone has a common, precise reference point for the time.