Dictionary term
DUT1
Direct answer
DUT1 is the published correction UT1 minus UTC used to approximate Earth-rotation time from a UTC signal.
DUT1 is the broadcast difference between UT1 and UTC.
- Source
- The Great Almanac Dictionary
- Category
- Calendars & Timekeeping
- Also appears in
- Calendars & Timekeeping
- Aliases
- None listed
- Last updated
- 2026-07-16
Quick reference
- Use when
- Use DUT1 with official IERS or national time-service bulletins for calculations requiring subsecond Earth orientation.
- Do not use it for
- Do not reuse an old DUT1 value; it changes as Earth rotation evolves and is regularly updated.
- Reference category
- Calendars & Timekeeping
- Related terms
- Delta T, Earth Rotation Angle, Calendar, Julian Date
The story behind DUT1
Radio time services began broadcasting DUT1 corrections as atomic UTC and variable Earth rotation were coordinated.
DUT1 in spiritual tradition
Spiritually, DUT1 is a compact example of measurement keeping uniform clocks connected to the moving Earth.
The Great Almanac frames DUT1 with educational restraint. Mystical or symbolic language may be meaningful, but it should not be exaggerated into certainty, panic, or permission to ignore ordinary responsibility.
DUT1 in the Bible
This is a factual calendar, astronomy, Earth-science, cultural-history, or observational reference. It can support wonder and practical planning without becoming a claim of fate, spiritual causation, or private revelation.
DUT1 in numerology
DUT1 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 DUT1 matters
It lets navigation, astronomy, and surveying users obtain rotational time without receiving a separate full UT1 time service.
Example in a reading: Adding the signed DUT1 value to UTC gives an approximation of UT1 for the same instant.
Interpretive caution: Do not reuse an old DUT1 value; it changes as Earth rotation evolves and is regularly updated.
How DUT1 is used in a reading
Use DUT1 with official IERS or national time-service bulletins for calculations requiring subsecond Earth orientation.
Where interpretation stops
DUT1 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:
- IERS Glossary: Universal Time (UT1) - Official definition of UT1 as Earth-rotation time and its publication as UT1-UTC.
- NIST: UTC(NIST) Time Scale - Official description of UTC realization, atomic time, and leap-second coordination.
The page starts with a direct definition, then separates use, example, caution, spiritual meaning, and historical context. For astrology, occult, demonology, curse, and spiritual warfare terms, the editorial rule is to explain the term without making fear-based, fatalistic, medical, legal, financial, or ritual-instruction claims.
Continue learning
Place this timekeeping idea beside the current sky, universal timing, and live celestial positions.
Open Worldwide WatchRelated terms
These related entries help place DUT1 inside a wider reference cluster instead of leaving it as a standalone keyword.
