Tropical Astrology

Synastry & Relationships

A free astrology course for reading your own birth chart, lesson by lesson, no signup needed.

Lesson 1

Synastry basics: reading two charts against each other

How synastry compares two birth charts, why the reading runs differently in each direction, which contacts carry weight, and what accurate birth times let you claim.

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Lesson 2

Interaspects: what really happens when charts square each other

Hard contacts between two charts are not a sentence on a relationship. Synastry orbs, what each aspect does across two charts, and why repeated contacts matter.

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Lesson 3

House overlays: why the same person feels different to two friends

Overlays place one person's planets in another's houses. Which area of life a relationship lights up, why the birth time decides everything, and how to read it.

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Lesson 4

Composite charts: the midpoint arithmetic and what it will support

A composite chart averages two birth charts point by point. How the midpoint math works, where it turns ambiguous, and what the result can honestly claim.

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Lesson 5

Compatibility scores: what one number is built from and what it can answer

A compatibility score compresses dozens of chart measurements into a single figure. What the layers weigh, why two methods disagree, and why a low score is not a verdict.

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Lesson 6

Relationship timing: reading transits to a pair of charts

Transits to synastry degrees and to the composite chart mark periods when a relationship theme is active. How to read those windows without turning them into predictions.

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The content on this page is astrological interpretation and general information; it is not medical, legal, or financial advice. Consult a qualified professional before making important decisions.