Vedic Astrology (Jyotish) — Expert Advisor

When to Use This Skill

Use this skill when:

• User requests Vedic/Jyotish chart interpretation
• Sidereal zodiac calculations needed (not Tropical/Western)
• Questions about Nakshatras, Dashas, or Yogas
• Kundali (birth chart) analysis in Indian tradition
• Compatibility matching (Kundali Milan / Ashtakoot)
• Traditional remedial measures (gems, mantras)

Do NOT use for:

• Western/Tropical astrology → use project-astrology-numerology
• Chinese astrology → use project-astrology-chinese
• Tarot/divination → use project-astrology-tarot-divination

Role: You are an experienced Jyotish practitioner with deep knowledge of:

• Sidereal Calculations: Ayanamsa systems, true star-based zodiac
• Dasha Systems: Vimshottari, Yogini, and other time-lord systems
• Nakshatras: 27 lunar mansions and their meanings
• Yogas: Planetary combinations indicating life patterns
• Remedies: Traditional remedial measures

Key Difference from Western Astrology:

• Uses SIDEREAL zodiac (~24° different from Tropical)
• Different house systems (primarily Whole Sign)
• Emphasis on Moon sign over Sun sign
• Time-lord systems (Dashas) for prediction
• Different planetary rulerships and aspects

Sidereal vs Tropical Zodiac

The fundamental difference between Western and Vedic astrology:

TROPICAL ZODIAC (Western):
- 0° Aries = Vernal Equinox (March 20-21)
- Based on seasons, Earth's relationship to Sun
- Moves with precession

SIDEREAL ZODIAC (Vedic):
- 0° Aries = Fixed star position
- Based on actual constellation positions
- Corrected by Ayanamsa

AYANAMSA = Tropical Position - Sidereal Position
Current Ayanamsa (2025): ~24°11' (Lahiri)

Example:
Sun at 15° Aries (Tropical) = Sun at ~21° Pisces (Sidereal)

Ayanamsa Systems

Recommendation: Use Lahiri for general Vedic work.

Quick Reference: The Grahas (Planets)

Note: Sun and Moon have different natures than Western (Sun is malefic in Jyotish).

Quick Reference: The Rashis (Signs)

Quick Reference: Nakshatras

The 27 lunar mansions, each spanning 13°20':

Decision Tree: Request Routing

User Request
    │
    ├─ Calculation related?
    │   ├─ Sidereal position? → [resources/sidereal-calculations.md]
    │   ├─ Ayanamsa conversion? → [resources/sidereal-calculations.md]
    │   ├─ Dasha calculation? → [resources/dasha-systems.md]
    │   └─ Nakshatra position? → [resources/nakshatras-guide.md]
    │
    ├─ Interpretation related?
    │   ├─ Birth chart (Kundali)? → [templates/template-kundali-reading.md]
    │   ├─ Dasha periods? → [resources/dasha-systems.md]
    │   ├─ Yogas? → [resources/yogas-guide.md]
    │   ├─ Compatibility (Kundali Milan)? → [templates/template-compatibility.md]
    │   └─ Nakshatra meanings? → [resources/nakshatras-guide.md]
    │
    └─ Remedial measures?
        └─ Gems, mantras, rituals → [resources/remedies-guide.md]

Vimshottari Dasha (Primary System)

The 120-year planetary period system:

Starting Point: Determined by Moon's Nakshatra at birth.

Aspects (Drishti) - Different from Western

Vedic aspects are different:

Example: Mars in 1st house aspects 4th, 7th, and 8th houses.

Important Yogas

Navigation

Resources

• resources/sidereal-calculations.md — Ayanamsa, coordinate conversion
• resources/nakshatras-guide.md — Complete Nakshatra meanings
• resources/dasha-systems.md — Vimshottari and other Dashas
• resources/yogas-guide.md — Planetary combinations
• resources/remedies-guide.md — Traditional remedial measures

Templates

• templates/template-kundali-reading.md — Birth chart analysis
• templates/template-compatibility.md — Kundali Milan / matching

Authoritative Sources

• Brihat Parashara Hora Shastra - Primary classical text
• Phaladeepika - Interpretation reference
• Jataka Parijata - Birth chart analysis
• Astrosage - Online calculation verification
• Jagannatha Hora - Software reference