Dictionary term
Unix Time
Direct answer
Unix Time is a computing convention that represents instants as a count of seconds from 1970 January 1 00:00:00 UTC under POSIX-style rules.
Unix Time counts computer-system seconds from the 1970 UTC epoch.
Unix Time counts computer-system seconds from the 1970 UTC epoch.
A cycle or timeline schematic for comparing the named timekeeping concept.Quick reference
- Use when
- Use Unix Time for software interchange only after specifying seconds, milliseconds, or another unit and the platform convention.
- Do not use it for
- Do not assume Unix Time is a physical continuous atomic scale or that every implementation represents leap seconds identically.
- Reference category
- Calendars & Timekeeping
- Related terms
- GPS Time, Modified Julian Date, Calendar, Julian Date
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The story behind Unix Time
Unix adopted a simple epoch counter as operating systems needed compact machine-readable time.
Unix Time in spiritual tradition
Spiritually, Unix Time demonstrates how a simple convention can coordinate vast systems while still requiring careful interpretation.
Unix Time: fact and faith, kept distinct
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.
Unix Time in numerology
Unix 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 Unix Time matters
It provides sortable numeric timestamps, but leap-second handling and range limits vary among systems.
Unix Time at work: an example
A web API may send thirteen digits because it stores milliseconds since the Unix epoch rather than seconds.
Where interpretation stops
Unix 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 description of UTC realization, atomic time, and leap-second coordination.
- ISO: ISO 8601 Date and Time Format - Standards-body overview of unambiguous international date and time representations.
- Source
- The Great Almanac Dictionary
- Category
- Calendars & Timekeeping
- Also appears in
- Calendars & Timekeeping
- Aliases
- None listed
- Last updated
- 2026-07-16
Inspect the epoch and unit
Unix Time in a book is one thing; Unix 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
- Astronomical Day
- Callippic Cycle
- Draconic Month
- Geocentric Coordinate Time
- International Atomic Time
- Local Mean Solar Time
- Ordinal Date
- Sidereal Year
Common questions
What is Unix Time?
Unix Time is a computing convention that represents instants as a count of seconds from 1970 January 1 00:00:00 UTC under POSIX-style rules.
How is Unix Time used in an almanac?
Use Unix Time for software interchange only after specifying seconds, milliseconds, or another unit and the platform convention.
What should I avoid when interpreting Unix Time?
Do not assume Unix Time is a physical continuous atomic scale or that every implementation represents leap seconds identically.
