Two-chart reference
Sun sextile Moon in synastry
A Sun-Moon sextile links one person's direction with the other's emotional rhythm through a 60° contact. Astrologers read it as an opportunity for cooperation that develops when both people participate.
60° exact angle · 4° maximum synastry orb in Astriel
Compare two birth chartsKeep each person's placement clear
Person A is the first person entered in the calculator. Person B is the second. Each contact compares one placement from each chart.
A's Sun sextile B's Moon
A's Sun carries the personal-direction theme. B's Moon carries the emotional-needs theme in this contact.
For example
For example, A's Sun in Aries sextile B's Moon in Gemini connects initiative with curiosity. A proposes trying an unfamiliar activity; B responds with questions and ideas. The symbolic fit concerns movement and exchange, while the sextile leaves room for each person to choose their involvement.
A's Moon sextile B's Sun
B's Sun carries the personal-direction theme. A's Moon carries the emotional-needs theme. Keep these owners with the contact when comparing other rows.
For example
With A's Moon in Taurus sextile B's Sun in Cancer, the example changes. B's wish to create a welcoming home can connect with A's preference for reliable routines. A experiences the contact through comfort; B experiences it through a goal they want to express.
If both directions appear
A's Sun with B's Moon and A's Moon with B's Sun are separate contacts. Each has its own orb and birth-time certainty.
Read both with their original labels. Two contacts do not establish a stronger bond.
Support that develops through participation
The Sun describes purpose and self-expression; the Moon concerns habitual responses and what feels comfortable. A sextile suggests that these functions can assist each other without being identical. The Sun person can give direction to something the Moon person cares about. The Moon person can notice the conditions that make that direction sustainable.
Read this beside the other contacts
A trine is conventionally read as an easier existing flow; a sextile emphasizes an available connection that benefits from participation. A Mercury square elsewhere can still describe differences in communication. Read that contact separately rather than assuming cooperation in one area resolves another.
The calculator groups contacts by birth-time certainty, then orders each group by the smallest possible orb. That order is geometric.
Keep the limits of the interpretation clear
Cooperation needs a choice. A sextile does not show that help was requested, that it will be accepted, or that anyone owes it.
Use your experience to judge the example. Birth details and chart contacts cannot establish consent, feelings or a future outcome.
Check the angle and birth-time range
The orb is the distance from the exact 60° angle. Astriel's synastry sextile rule includes orbs up to 4°.
Compare the degrees
- Sun at 10° Aries and Moon at 12° Gemini: 62° apart, a 2° orb.
- Sun at 10° Aries and Moon at 14° Gemini: 64° apart, exactly at the 4° limit.
- Sun at 10° Aries and Moon at 15° Gemini: 65° apart, outside the 4° limit.
These are synthetic positions. The two signs alone cannot establish a contact; the degrees matter.
Read a conditional contact
An uncertain birth time can produce an orb range. A conditional contact fits the rule during only part of that range.
A contact within the limit throughout the available range can still have an uncertain exact orb. Neither status measures the likelihood of a relationship outcome.
Separate synastry, natal and composite charts
This guide compares two birth charts. A natal aspect belongs to one chart, while a composite uses calculated midpoints between two charts.
Read the natal Sun-Moon sextile guideSource and editorial limits
Interpretations draw on the owner-supplied astrology reference, Part VI's synastry principles and the synastry synthesis protocol. Examples are original. Angles and orb limits follow Astriel's relationship calculation rules.
Symbolic interpretation is not scientific evidence about a relationship. The people labels identify chart factors; either person can initiate plans or express needs.