What Is UTC Time?
UTC time is the international standard used to keep clocks synchronized around the world.
All time zones are based on UTC. Each region adds or subtracts hours to determine local time.
Examples:
| City | Time Zone |
|---|---|
| Los Angeles | UTC−8 |
| Berlin | UTC+1 |
| Sydney | UTC+10 |
UTC itself does not change for daylight saving time.
This makes it a stable reference for global coordination.
Why UTC Replaced GMT
Before UTC, the world used Greenwich Mean Time (GMT).
GMT was based on the position of the sun over the Royal Observatory in Greenwich, England.
However, modern timekeeping requires more precise measurement, which is why UTC replaced GMT as the official global standard.
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