coordinated universal time
Học thuậtThân thiện
Definition
- Noun:
- Coordinated Universal Time (UTC): The primary time standard by which the world regulates clocks and time. It is a modern successor to Greenwich Mean Time (GMT) and is maintained with the addition of leap seconds to account for irregularities in Earth's rotation.
Usage
- Coordinated Universal Time is used globally in technical, scientific, and international contexts to avoid confusion between different time zones. It is the basis for civil time worldwide.
- All flight schedules are listed in Coordinated Universal Time.
- The server logs are timestamped using Coordinated Universal Time.
Examples
- Noun:
- The conference call is scheduled for 14:00 Coordinated Universal Time.
- Scientists synchronize their observations to Coordinated Universal Time.
Advanced Usage
- "UTC" as an abbreviation: "Coordinated Universal Time" is almost universally abbreviated as UTC. This abbreviation is a compromise between the English "CUT" and the French "TUC" (Temps Universel Coordonné).
- Please set your system clock to UTC.
- "Zulu time": In military and aviation contexts, UTC is often referred to as "Zulu time," using the phonetic alphabet letter 'Z' for zero offset.
- The operation commences at 0600 Zulu (UTC).
Variants and Related Words
- GMT (Greenwich Mean Time): Often used interchangeably with UTC in casual contexts, though technically GMT is a time zone while UTC is a time standard. UTC is more precise.
- Leap second: An adjustment of one second occasionally added to UTC to keep it aligned with the Earth's slowing rotation.
Synonyms
- World time
- Universal Time (UT1): A related astronomical time standard from which UTC is derived.
Related Phrases
- "UTC offset": The difference in hours and minutes from Coordinated Universal Time for a specific location or time zone.
- Japan Standard Time has a UTC offset of +9:00.
Noun
- Greenwich Mean Time updated with leap seconds