compatibility-synastry

Calculate and interpret astrological synastry, composite, and Davison charts.

3|Updated Mar 19, 2026

Search Tags:#compatibility #horoscope #astrology #relationship #ephemeris #synastry

Ready to run

npx skills add https://github.com/openephemeris/openephemeris-MCP --skill compatibility-synastry

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: compatibility-synastry
Source: https://github.com/openephemeris/openephemeris-MCP/tree/main/skills/compatibility-synastry
Command: npx skills add https://github.com/openephemeris/openephemeris-MCP --skill compatibility-synastry

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill resolves the complexity of calculating and interpreting astrological compatibility between two individuals, removing the manual effort of geocoding, timezone lookup, and chart synthesis.

Core Features & Use Cases

Synastry Analysis: Evaluates how two people's planetary energies interact through cross-aspects.
Composite & Davison Charts: Generates a third chart representing the relationship entity itself.
Use Case: Use this when a user asks for a deep dive into romantic, friendship, or business partnership compatibility, including house overlays and planetary aspect analysis.

Quick Start

Use the compatibility-synastry skill to analyze the relationship between two people by providing their full birth dates, times, and locations.

Frequently Asked Questions about compatibility-synastry

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I analyze astrological compatibility between two people using synastry charts?▼

Analyzing astrological compatibility through synastry charts requires precise birth data for both individuals, including dates, exact times, and locations. This process evaluates how planetary energies interact through cross-aspects and house overlays to interpret relationship dynamics.

What is the difference between synastry, composite, and Davison relationship charts?▼

Synastry charts evaluate how two individuals' planetary energies interact through cross-aspects, while composite and Davison charts calculate a third chart representing the relationship entity itself. Composite charts use midpoint averages, whereas Davison charts use midpoint dates and physical locations.

How do I calculate accurate planetary aspects when birth locations involve historical timezone changes?▼

Calculating accurate planetary aspects with historical timezone changes requires precise birth data inputs including exact time and location. The skill resolves this complexity automatically through historical timezone resolution and geocoding to ensure accurate planetary aspect and house overlay interpretations.

Can I use astrology compatibility analysis for business partnerships or is it only for romantic relationships?▼

Astrology compatibility analysis supports romantic, friendship, and business partnership evaluations. By providing full birth dates, times, and locations for both individuals, the synastry chart interpretation reveals how planetary energies interact across various relationship contexts.

What birth data do I need to generate accurate house overlays for relationship astrology?▼

Generating accurate house overlays for relationship astrology requires precise birth data inputs: full birth dates, exact birth times, and specific birth locations for both individuals. This enables accurate geocoding and historical timezone resolution for multi-layered chart synthesis.

Why does my synastry chart calculation require exact birth times instead of just birth dates?▼

Synastry chart calculations require exact birth times because planetary house overlays depend on the precise degree of the ascendant and house cusps. Without accurate times and locations, historical timezone resolution and geocoding cannot produce reliable multi-layered chart synthesis.