The Magazine

Topic Relationships

Synastry, compatibility and what a chart can and cannot say about two people.

Other topics

In short

Synastry, compatibility and what a chart can and cannot say about two people. Every relationships feature from the daily magazine, in eleven languages, with the free tools behind each one.

  • Both birth times or neither. One accurate time and one guess produces a report that looks precise and is not.
  • Hard aspects are not incompatibility. Squares between charts are what long relationships are usually built out of.
  • Read the report together rather than about them. Synastry used as evidence in an argument stops being astrology.
  • A missing element in both charts is more telling than a clash — it shows what neither of you will remember to do.

8

Factors scored

2

Charts compared

1

Composite midpoint

29 yrs

Saturn test

What each contact governs in a comparison

Read the rows in order. Reports that lead with Venus flatter; reports that lead with the Moon last longer.

ContactGovernsFelt as
Moon–MoonDaily comfortEase or low-grade irritation
Sun–MoonMutual recognitionBeing understood
Venus–MarsAttractionChemistry, appetite
Mercury–MercuryConversationWhether talking is restful
Saturn contactsCommitment, dutyWeight, sometimes limitation
AnglesVisibility, homeWhether the pairing is public or private

Origins

Comparing two charts is old practice. Hellenistic astrologers checked marriage prospects by the condition of the seventh place and the Moon; medieval writers formalised the comparison; the twentieth century added synastry grids, composite charts and, eventually, the sun-sign compatibility table that made the whole subject look trivial.

The features here go back to the technique. Element and modality tell you the friction pattern, Moon contacts tell you whether daily life is comfortable, Venus and Mars tell you about attraction, and Saturn tells you whether the thing can hold weight. None of it says whether you should stay — only what you are working with.

The Method

  1. Compare Moons first

    Moon-to-Moon contact predicts whether ordinary Tuesdays feel easy. It matters more over years than anything Venus does.

  2. Check Venus and Mars both ways

    Attraction is directional. Your Venus to their Mars is a different reading from theirs to yours.

  3. Find the Saturn contacts

    Saturn is the commitment and the friction. Read where it lands before you read anything romantic.

  4. Read the composite last

    The midpoint chart describes the relationship as a third entity. It is a summary, not a starting point.

Practice Notes

  • Both birth times or neither. One accurate time and one guess produces a report that looks precise and is not.
  • Hard aspects are not incompatibility. Squares between charts are what long relationships are usually built out of.
  • Read the report together rather than about them. Synastry used as evidence in an argument stops being astrology.
  • A missing element in both charts is more telling than a clash — it shows what neither of you will remember to do.
  • Re-run the comparison every couple of years. Transits to the composite change the weather considerably.

Myth & Truth

Commonly said

Some sign pairs simply cannot work.

In practice

No pairing is disqualifying. The chart describes what each side will have to translate for the other, and translation is learnable.

Commonly said

Twin flame means destined partner.

In practice

It is a modern spiritual concept, not an astrological one, and it is frequently used to justify staying in something painful. Read it as a metaphor for intensity.

Questions Readers Ask

What does a compatibility score actually measure?

On this site, eight weighted factors — elements, modalities, Sun, Moon, Venus, Mars, Saturn and the angles. The number is a summary of the report, not a verdict.

Can I compare charts with someone who is not with me?

Yes. The partner-linked synastry tool sends a private invite link; they enter their own birth data and the two charts combine without either of you sharing details in a message.

Does this work for friendships and family?

Entirely. Drop the Venus–Mars weighting and the same technique reads siblings, colleagues and co-founders.

Should a bad report end a relationship?

No. A chart comparison describes tendencies, not obligations, and no honest astrologer will make that decision for you.