Synastry ♎♏ is a branch of astrology that answers the question that almost every couple asks themselves sooner or later: «are we really compatible with each other, or are we just having a good time right now».
Psychologist and astrologer Liz Greene in her book «Relating: An Astrological Guide to Living with Others» (1977) wrote that true compatibility is not about signs being identical, but about how two different systems find balance between each other.
Want to check birth dates first? Check out our Online Date of Birth Compatibility Calculation →
▷ Venus–Mars — romantic and physical attraction
▷ Moon–Moon — alignment of emotional needs and ways of showing care
▷ Ascendant–Ascendant — how easy and natural it is for you to communicate on a daily level
▷ Saturn to partner's personal planets — about long-term potential and commitments, sometimes a feeling of «lessons» in relationships
Can synastry be done if only the partner's birth date is known, without the exact time? Yes, partially — Sun, Moon (in most cases), and personal planets can be analyzed without the exact time, but the Ascendant and exact houses will require knowing it.
Does a hard aspect in synastry mean the relationship is doomed? No. Hard aspects show areas requiring attention and growth, not a verdict — many strong couples successfully work through such themes by being aware of them.
Does synastry work for friendships or business relationships, not just romantic ones? Yes, the method applies to any meaningful connections — business partnerships, friendships, relationships between parents and children, where understanding dynamics and friction points is also key.
What does a match in Sun signs between two partners show? On its own, not much — the common «language» may be similar, but true dynamics are visible only with a complete chart comparison, including Moon, Venus, Mars, and other planets. More about the Sun sign itself — in the article «What Is a Natal Chart» →
How does a composite chart differ from synastry? Synastry compares two separate charts against each other, while a composite chart creates a third, «shared» relationship chart — as if the couple had a single joint natal chart. This is a more advanced and complementary method.
Can synastry be calculated for relationships that haven't started yet? Yes, it often helps understand potential dynamics before getting seriously close, though final conclusions are always best made relying on real communication experience rather than calculation alone.
How long is a synastry reading valid — does it need to be repeated? Synastry itself, like a natal chart, does not expire — it is based on fixed birth data. However, if you want to see how current trends in a couple are unfolding, mutual transits for a specific period are additionally examined.
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Unlike compatibility based on a single zodiac sign, synastry compares the complete Natal charts of two people — and that is why it provides a much more accurate and honest picture.
Synastry: Method in Short 📋
| Parameter | Value |
|---|---|
| 🔍 What it is | Comparison of two complete natal charts |
| 💡 What it shows | Attraction points, friction zones, relationship dynamics |
| 📋 What is needed for calculation | Date, time, and place of birth of both partners |
| 👥 Who it is for | Dating couples, married couples, planning a relationship, business partners, parent-child relationships |
| ⚡ Difference from «sign compatibility» | Takes into account all planets and houses, not just the Sun |
| 🔗 Related methods | Composite chart, mutual transits |
| 🚀 What's next | Personal consultation for a full reading |
How Synastry Differs from Zodiac Sign Compatibility ♈
When people say «Aries and Libra are a good match», they usually mean only Sun sign compatibility — which is just one element out of dozens in each chart. Synastry looks deeper: how your Moon interacts with your partner's Venus, how your Ascendants correlate with each other, and which houses the other person's planets fall into.Psychologist and astrologer Liz Greene in her book «Relating: An Astrological Guide to Living with Others» (1977) wrote that true compatibility is not about signs being identical, but about how two different systems find balance between each other.
Want to check birth dates first? Check out our Online Date of Birth Compatibility Calculation →
How Comparing Two Charts Works 🔍
In synastry, two people's charts are overlaid onto one another, and the astrologer looks at aspects — angles formed by the planets of one person with the planets of the other. For example, a harmonious aspect between your Venus and your partner's Mars often indicates a natural mutual attraction, while a hard aspect between Moons speaks to a difference in emotional needs that you will have to learn to work with.Which Planet Combinations Are Looked at First ⚖️
▷ Sun–Moon — basic feeling of «us/them» on a deep level▷ Venus–Mars — romantic and physical attraction
▷ Moon–Moon — alignment of emotional needs and ways of showing care
▷ Ascendant–Ascendant — how easy and natural it is for you to communicate on a daily level
▷ Saturn to partner's personal planets — about long-term potential and commitments, sometimes a feeling of «lessons» in relationships
What Synastry Cannot Tell 🌙
It is important to be honest: synastry does not issue a verdict of «ideal couple» or «break up immediately». It shows potential, natural points of ease, and areas that will require conscious effort — and how exactly to manage this potential depends on the decisions and efforts of both people, not just the position of planets at the time of their birth.Frequently Asked Questions ❓
How does synastry differ from a zodiac sign compatibility horoscope? Synastry considers full natal charts of both partners — all planets, houses, and aspects, not just the Sun position, thereby providing a significantly more precise and personalized picture.Can synastry be done if only the partner's birth date is known, without the exact time? Yes, partially — Sun, Moon (in most cases), and personal planets can be analyzed without the exact time, but the Ascendant and exact houses will require knowing it.
Does a hard aspect in synastry mean the relationship is doomed? No. Hard aspects show areas requiring attention and growth, not a verdict — many strong couples successfully work through such themes by being aware of them.
Does synastry work for friendships or business relationships, not just romantic ones? Yes, the method applies to any meaningful connections — business partnerships, friendships, relationships between parents and children, where understanding dynamics and friction points is also key.
What does a match in Sun signs between two partners show? On its own, not much — the common «language» may be similar, but true dynamics are visible only with a complete chart comparison, including Moon, Venus, Mars, and other planets. More about the Sun sign itself — in the article «What Is a Natal Chart» →
How does a composite chart differ from synastry? Synastry compares two separate charts against each other, while a composite chart creates a third, «shared» relationship chart — as if the couple had a single joint natal chart. This is a more advanced and complementary method.
Can synastry be calculated for relationships that haven't started yet? Yes, it often helps understand potential dynamics before getting seriously close, though final conclusions are always best made relying on real communication experience rather than calculation alone.
How long is a synastry reading valid — does it need to be repeated? Synastry itself, like a natal chart, does not expire — it is based on fixed birth data. However, if you want to see how current trends in a couple are unfolding, mutual transits for a specific period are additionally examined.
The Full Picture Is Only Visible Together 🌌
Synastry is not about searching for an ideal match, but about an honest, deep look at how two personalities can complement each other. If you want to truly understand what is happening in your relationship — I invite you to a consultation →, where we will compare both charts and explore your specific dynamics rather than general patterns.
Online services tarot, astrology... →
