Astrology Compatibility (Synastry): Read Two Charts Like a Pro
Birth Chart • Aspects • Planets • Houses • Sign PairsCompatibility isn’t “Are we meant to be?”—it’s How do we work? Synastry compares two birth charts to see how your planets vibe with theirs, which houses you light up for each other, and what aspects create ease or friction. It’s the map for romance, friendship, creative partners, co-founders, and family—any “you + them” dynamic.
What Synastry Actually Shows
Synastry lays two charts on top of each other and watches the conversation between planets. Your Sun may energize their 10th house (you boost their career), while their Saturn squares your Venus (love meets timing and boundaries). It’s not fate; it’s a briefing: where the chemistry flows, where it squeaks, and what rules will keep the engine healthy. To read it well, layer planet nature, sign tone, house topics, and exact aspects.
How to Read Synastry (A Simple Framework)
Step 1: Start with the personal planets: Sun, Moon, Mercury, Venus, Mars. These set identity, needs, comms, love style, and pace. Step 2: Read the major angles between charts: conjunction, sextile, square, trine, opposition. Step 3: Track house overlays: where do you land in each other’s life—home, money, career, intimacy? Step 4: Add outer planets for seasoning: Jupiter brings growth, Saturn brings glue/tests, Uranus shakes, Neptune inspires/fogs, Pluto deepens.
Finally, translate into practice: one strength to double-down on, one friction to design around, and one shared ritual. That’s how synastry leaves the page and helps real people.
Planets That Move Relationships
Sun • Moon
The core pair: Sun–Moon harmony is easy rhythm; tension needs a schedule that honors purpose and rest. Oppositions are classic polarity—trade turns and you’ll grow fast.
Mercury
Communication styles. Mercury–Mercury flow = we “get” each other; Mercury–Mars square = sharp edges → rules for debates.
Venus • Mars
Bonding and pursuit. Conjunction = spark; opposition = pacing pact; Venus–Saturn asks for consistency and warmth.
Jupiter • Saturn
Growth and glue. Trines build sustainable wins; oppositions need a staircase plan.
Uranus • Neptune • Pluto
Awakenings, inspiration/fog, deep reform. Great teachers, intense seasons. Design for flexibility and honesty; link back to core values.
House Overlays (Where You Land in Their Life)
When your planet falls into someone’s house, you light up that part of their life. Your Sun in their 1st is energizing; in their 4th it feels like home; in their 10th you become a catalyst for career. Venus in someone’s 7th is textbook partnership vibes; Mars in the 8th is intense and transformative. Overlay reading is simple: planet nature × house meaning—then add aspects for tone.
Aspects That Move the Needle
In synastry, the five majors carry most of the story: conjunctions fuse, sextiles invite, squares train, trines ease, oppositions balance. Watch Mercury aspects for communication, Venus/Mars for attraction and pacing, Saturn for commitment and timing, Jupiter for generosity and growth, Uranus/Neptune/Pluto for change, inspiration, and depth.
Zodiac Sign Pair Finder
Sun signs aren’t the whole story, but they’re a clean entry. Start with the pair below, then drill into planets, houses, and aspects for the real nuance.
Compatibility by Context
Different relationships weight different signals. Romance cares about Venus/Mars chemistry and Moon safety. Creative partners lean on Mercury aspects, and often Jupiter for generosity. Co-founders need Saturn agreements and clean conflict paths (watch Mars squares). Family patterns show up through house overlays—who lights up your 4th/10th axis? In every context, the goal is the same: name the gifts, design for the friction.
How Skygram.ai Helps (Fast, Practical, Private)
Skygram.ai reads synastry without the fluff. Enter both birth details to generate charts, overlays, and the key aspects between you. Our AI explains the signals in plain language and turns them into actions—checklist suggestions, conversation prompts, and timing notes. You can ask targeted questions like: “What’s the best way to handle Mercury square Mars with my colleague?” or “How do I keep romance warm with Venus opposite Saturn?” You’ll get answers tied to your planets, signs, and houses—for friends, lovers, co-workers, and family.
Mini Case Studies (Translate Signals into Moves)
Romance: Venus □ Saturn
Sweetness meets timing/tests. Make a clear promise (Saturn) and a weekly ritual (Venus). Use budgeted dates so structure protects warmth. Read more: Venus square Saturn.
Work: Mercury □ Mars
Sharp minds, sharp elbows. Create a debate window with rules, then cool-down. Assign the final call to the relevant career owner. See: Mercury square Mars.
Family: Moon △ Venus
Kindness comes easily; name traditions so the good vibes persist under stress. See: Moon trine Venus.
FAQ
Do I need a perfect birth time?
Exact times help (angles and houses change quickly). If you don’t know it, you can still read many planet-to-planet aspects. Treat house overlays cautiously and focus on consistent themes.
Are Sun-sign matches enough?
No. Sun signs help with tone, but the real story is in Moon/Mercury/Venus/Mars aspects and house overlays. Use Sun pairs to start, not to decide.
Synastry vs. Composite vs. Davison?
Synastry compares two charts (how you affect each other). Composite blends them into a midpoint chart (the relationship’s “entity”). Davison uses time/space midpoints. Start with synastry, then check composite for shared purpose.
What should I read next?
Run your charts, then see: planets • signs • houses • aspect hubs: conjunction, sextile, square, trine, opposition.
Explore More
- Compatibility hub: https://skygram.ai/compatibility
- Birth chart tools: https://skygram.ai/birth-chart • Astrology charts guide
- Planets index: https://skygram.ai/planets
- Signs index: https://skygram.ai/signs
- Houses index: https://skygram.ai/houses
- Aspect hubs: https://skygram.ai/aspects