Dictionary term
Astronomical Season
Direct answer
Astronomical Season: An Astronomical Season is one of four intervals bounded by equinoxes and solstices, defined by Earth's orbital position and axial orientation relative to the Sun.
An Astronomical Season runs from one equinox or solstice to the next.
An Astronomical Season runs from one equinox or solstice to the next.
A Sun–Earth orientation for seasonal, atmospheric, tidal, and terrestrial terms.Quick reference
- Use when
- Use Astronomical Season when reporting equinox and solstice boundaries, always naming the hemisphere because the season names reverse north and south.
- Do not use it for
- Do not use a Northern Hemisphere season label as if it applied globally.
- Reference category
- Seasons & Earth Almanac
- Related terms
- Meteorological Season, Equinox, Solstice, Sunrise
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The story behind Astronomical Season
Solstices and equinoxes have anchored seasonal calendars and observations across many cultures for thousands of years.
Astronomical Season in spiritual tradition
Astronomical seasons place local change inside the larger geometry of a tilted, orbiting Earth.
Astronomical Season: 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This is a factual astronomy, calendar, Earth-science, cultural, or historical reference.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.
Astronomical Season in numerology
Astronomical Season 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 Astronomical Season matters
Astronomical seasons connect the calendar with measurable Earth-Sun geometry, but their lengths and civil start dates vary slightly.
Astronomical Season at work: an example
The June solstice begins astronomical summer in the Northern Hemisphere and winter in the Southern Hemisphere.
Where interpretation stops
Astronomical Season 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:
- NOAA NCEI: Meteorological Versus Astronomical Seasons - Official comparison of seasons defined by Earth-Sun geometry and by climatological month groups.
- U.S. Naval Observatory: The Seasons and the Earth's Orbit - Official explanation of seasons, orbital distance, and Earth-Sun geometry.
- Source
- The Great Almanac Dictionary
- Category
- Seasons & Earth Almanac
- Also appears in
- Seasons & Earth Almanac
- Aliases
- None listed
- Last updated
- 2026-07-15
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More in Seasons & Earth Almanac
Common questions
What is Astronomical Season?
An Astronomical Season is one of four intervals bounded by equinoxes and solstices, defined by Earth's orbital position and axial orientation relative to the Sun.
How is Astronomical Season used in an almanac?
Use Astronomical Season when reporting equinox and solstice boundaries, always naming the hemisphere because the season names reverse north and south.
What should I avoid when interpreting Astronomical Season?
Do not use a Northern Hemisphere season label as if it applied globally.
