The Vernal Equinox is one of the most important astronomical and astrological events. It marks the moment when day and night become equal, and the Sun begins its northward journey.
But an important question arises:
Does the position of the Vernal Equinox remain fixed in the zodiac?
Why is it no longer in Aries but in Pisces today?
And why is Mesh Sankranti still so important in Vedic astrology?
To understand this, we must explore a powerful cosmic phenomenon called precession.
1. What is Vernal Equinox?
The Vernal Equinox occurs around March 20–21 every year.
At this moment:
- Sun crosses the celestial equator
- Day = Night everywhere on Earth
- Beginning of spring season in Northern Hemisphere
Astronomically, it is treated as:
- 0° point of the zodiac (Tropical Zodiac)
2. What is Earth’s Precession?
The Earth does not spin perfectly straight. It wobbles like a spinning top.
This slow movement is called:
Axial Precession
Key Facts:
- One full cycle ≈ 25,772 years
- Shift rate ≈ 1° every 72 years
This causes the background stars to slowly shift relative to Earth’s axis.
3. Does Precession Affect Equinox & Seasons?
Effect on Equinox Position (YES)
Precession shifts the position of the Vernal Equinox in the zodiac.
- Equinox moves backward (retrograde) through zodiac signs
- This is called:
Precession of the Equinoxes
Effect on Seasons (NO)
Seasons are caused by:
Earth axial tilt
So:
- Spring will still occur in March
- Winter, Summer remain unchanged
Precession does NOT change seasons, only the zodiac backdrop
4. In Which Zodiac is Vernal Equinox Today?
At present:
Vernal Equinox lies in:
Pisces (Meena Rashi)
This is why we say we are in the Age of Pisces.
5. Where Was Vernal Equinox in the Past?
Let’s calculate approximately:
Today (2025–2026)
- Vernal Equinox ≈ Pisces
~2000 Years Ago (Around 0 AD)
- Vernal Equinox was in:
Aries (Mesh Rashi)
This is why:
- Aries became the starting point of zodiac
~1200 Years Ago (Around 800 AD)
- Vernal Equinox had shifted to:
✔ Late Aries / Early Pisces transition
~4000–6000 Years Ago
- Vernal Equinox was in:
✔ Taurus
6. Why Was Aries (Mesh) the Starting Point?
When ancient astrologers defined the zodiac:
Vernal Equinox was in:
✔ Aries (Mesh Rashi)
So:
- 0° Aries = Starting point of zodiac
- This became the foundation of:
- Western astrology (Tropical)
- Early Vedic references
7. Why is Mesh Sankranti Still Important?
Mesh Sankranti marks:
Sun entering Aries (Mesh Rashi) in Sidereal Zodiac
Reasons for its importance:
(A) Sidereal vs Tropical Difference
- Tropical Zodiac → Based on Equinox (moving)
- Sidereal Zodiac → Based on fixed stars (constant)
Vedic astrology follows:
✔ Sidereal system
So:
- Aries remains the first sign permanently
(B) Solar New Year in India
Mesh Sankranti marks:
- Beginning of solar year
- Celebrated as:
- Baisakhi
- Vishu
- Puthandu
(C) Strong Fire Energy (Agni Tatva)
Aries represents:
- Initiation
- Energy
- Action
Hence:
- Considered best time for:
- New beginnings
- Agriculture cycles
8. Why is Vernal Equinox Now in Pisces?
Due to continuous precession:
Equinox shifted from:
- Aries → Pisces
Rate:
- 1° shift every 72 years
Over ~2000 years:
- Shift ≈ 27–28° (almost one full sign)
So now:
✔ Equinox is in Pisces
9. Future Shift
In coming centuries:
- Equinox will move into:
✔ Aquarius (Kumbha Rashi)
This will mark:
Age of Aquarius
10. Astrological Interpretation of This Shift
Age of Aries (Past)
- War, conquest, dominance
Age of Pisces (Current)
- Religion, spirituality, belief systems
Age of Aquarius (Future)
- Technology, innovation, collective consciousness
11. Simple Analogy
Think of it like this:
- Seasons = Fixed calendar (based on tilt)
- Zodiac = Background stars
- Precession = Slow shifting of that background
So:
- Calendar stays same
- Zodiac behind it keeps changing
The Vernal Equinox is not fixed in the zodiac due to the slow wobble of Earth called Axial Precession.
- It was in Aries ~2000 years ago
- It is now in Pisces
- It will move to Aquarius in future
However:
- Seasons remain unchanged
- Vedic astrology continues to follow fixed zodiac (Sidereal)
- Hence Mesh Sankranti remains highly important
This beautifully shows how astronomy and astrology intersect—one measures the sky, the other interprets its deeper meaning.
FAQ
Q1. Does precession change seasons?
No, seasons depend on Earth’s tilt, not precession.
Q2. Why is Aries still the first sign in Vedic astrology?
Because Vedic astrology uses the fixed (sidereal) zodiac.
Q3. When was Vernal Equinox in Aries?
Around 2000 years ago.
Q4. Why is it now in Pisces?
Due to backward movement caused by precession.
Q5. What is the Age of Aquarius?
Future era when Vernal Equinox shifts into Aquarius.