Dictionary term
Coordinated Universal Time
Direct answer
Coordinated Universal Time: Coordinated Universal Time, or UTC, is the internationally agreed standard for civil world time, realized with atomic clocks and coordinated with Earth rotation.
Coordinated Universal Time is the international reference standard for world time.
A cycle or timeline schematic for comparing the named timekeeping concept.Quick reference
- Use when
- Use UTC for stored astronomical event times and convert to local civil time only at the display layer with an explicit zone.
- Do not use it for
- Do not treat UTC as a geographic time zone or silently label a local timestamp as UTC.
- Reference category
- Calendars & Timekeeping
- Related terms
- Calendar, Solar Calendar, Lunar Calendar, Lunisolar Calendar
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The story behind Coordinated Universal Time
UTC became the modern world-time standard by combining atomic timekeeping with occasional adjustments tied to Earth rotation.
Coordinated Universal Time in spiritual tradition
UTC is a shared agreement that lets a global community speak precisely about one moment.
Coordinated Universal Time: fact and faith, kept distinct
This is a factual astronomy, calendar, Earth-science, cultural, or historical reference. It can support wonder at the created order without becoming a claim of fate, worship, or private revelation.
Coordinated Universal Time in numerology
Coordinated Universal Time is not a numerology claim. Any numbers attached to it should retain their ordinary scientific, calendrical, navigational, or historical meaning unless a separate symbolic interpretation is clearly labeled.
Why Coordinated Universal Time matters
UTC gives observations, APIs, archives, and users in different time zones a common timestamp.
Coordinated Universal Time at work: an example
An event recorded as 03:00 UTC represents one instant even though local date and clock time differ around the world.
Where interpretation stops
Coordinated Universal Time is presented as sourced astronomy, calendrical, Earth-science, cultural, or instrument-history reference. Definitions should distinguish measured phenomena from civil convention and historical interpretation, preserve location and time dependencies, and avoid turning factual sky data into a deterministic personal claim.
Sources and editorial method
Research references used for this entry include:
- NIST: UTC(NIST) Time Scale - Official explanation of Coordinated Universal Time and the U.S. realization UTC(NIST).
- U.S. Naval Observatory: Universal Time - Official explanation of Universal Time and its relationship to Greenwich timekeeping.
- Source
- The Great Almanac Dictionary
- Category
- Calendars & Timekeeping
- Also appears in
- Calendars & Timekeeping
- Aliases
- None listed
- Last updated
- 2026-07-15
Convert UTC to local time
Coordinated Universal Time in a book is one thing; Coordinated Universal Time in your own birth chart is your life. The Oracle casts your real chart and tells you what it means for your love, your work, and your year ahead, in conversation, free.
Speak with the OracleRelated terms
More in Calendars & Timekeeping
- Epact
- Gregorian Calendar
- Mean Solar Day
- Revised Julian Calendar
- Time Zone
- Anno Domini
- Besselian Epoch
Common questions
What is Coordinated Universal Time?
Coordinated Universal Time, or UTC, is the internationally agreed standard for civil world time, realized with atomic clocks and coordinated with Earth rotation.
How is Coordinated Universal Time used in an almanac?
Use UTC for stored astronomical event times and convert to local civil time only at the display layer with an explicit zone.
What should I avoid when interpreting Coordinated Universal Time?
Do not treat UTC as a geographic time zone or silently label a local timestamp as UTC.
