Moon Sextile Mercury Synastry: When How One of You Feels Fits How the Other Talks, From Two Different Places

Every birth chart has a Moon and a Mercury, and they do different jobs. The Moon is how you feel: your moods and needs, the habits that comfort you, what it takes for you to feel at ease. Mercury is how you think and talk: the words you choose, the questions you ask, how you explain, listen and joke. In this contact, one person's Moon is about 60° from the other person's Mercury, a sixth of the way round the zodiac.

A sextile usually joins signs of two different elements that get on: fire with air, or earth with water. (Usually, not always: a sextile that starts near the edge of a sign can reach into a different pair.) That is the geometry. The reading built on it is a fit between differences: the way one of you feels and the way the other talks do not come from the same temperament, but they suit each other, like two different tools that can do a job together.

So the contact can be easy without being automatic. The way one of you talks is somewhat unlike the way the other feels, and the two may still fit, each from a different starting point.

Friends, siblings, colleagues, flatmates, a parent and their child, and partners can all share this contact, and it is one contact among many in any two charts.

In this contact one of you brings the Moon and the other brings Mercury, and the two of you are in different elements that suit each other. Call them the Moon person and the Mercury person.

If you are the Moon person, you are mostly just feeling what you feel and wanting what helps: quiet, a warm drink, company, a familiar chair. Around the Mercury person you may notice a way of talking that is not your own and that you like having nearby. A question you had not thought of may come up, or your mood may look a little different once it has been said in another way.

If you are the Mercury person, you are mostly just thinking, asking, explaining and passing on what you have noticed. Around the Moon person you may notice that your words get a response about how they feel as well as what they say. That can give your thinking a second angle, and you may find you try out ideas in their company because the answer helps you shape them.

If the link also runs the other way, from the Mercury person's Moon to the Moon person's Mercury, each of you is both.

Either of you may feel first or speak first. In a sextile each side comes from a different element, so each of you may bring something the other would not have brought alone.

Whoever speaks may offer an angle: a question, a comparison, a way of putting a mood that is a little outside what the other would have chosen and still within what they can take up. Whoever listens may notice how the words are likely to be received by the people they concern, and say so in a way the speaker can use. These can run in either direction within a single conversation.

A feeling that might have stayed where it was can move once it has been looked at from a second side, and a thought can find its shape once someone has said how it sounds.

What each may want is to take part. Either of you may want a view to be answered, even with a different one, and either may want to be asked how they feel before the talk moves on. Where both happen, what gets said can fit both of you.

These are sketches, not reports: illustrations of how the contact might show up across different kinds of pairs.

• Flatmates. One flatmate wants to go on about the noise from the flat upstairs. The other suggests writing a note first, and they draft it together on the back of a cereal box, the first adding feeling and the second trimming the sentences.
• Parent and child. A parent notices their child is worried about a spelling test. The child says they might forget everything; the parent asks which word is the worst one, and the worry turns into a single word to practise.
• Colleagues. One colleague is nervous about a client call. The other offers three lines as an outline, and the first says the second line is too stiff for how they feel; they swap it for something looser and keep the rest.
• Siblings. Two siblings are writing a card for a grandparent's ninetieth birthday. One keeps starting sentences about how much it means; the other keeps shortening them. The card they send is shorter than the first, and warmer than the second.
• Friends. A friend arrives after a poor day. The other asks whether they would like to tell it or hear a story instead, and the friend, a little surprised to be offered a choice, takes the story first.
• Partners. Two partners write a holiday postcard together. One has a long, loose sentence about the light on the water; the other has the address, the stamp and a joke about the hotel, and the card has both.

In each sketch one person brings a feeling or a few words, and the other brings a second angle.

A sextile usually joins fire with air, or earth with water. In plain terms: fire is enthusiasm and action, air is talk and ideas, earth is practical steadiness, water is feeling. The Moon may be in either element of the pair, with Mercury in the other.

Fire and air. This pairing might be quick and talkative. It might look like two colleagues on a night train, one telling a story and the other adding the part about how it felt.

Earth and water. This pairing might be slower and more private. It might look like a parent and their grown child shelling peas on a doorstep, one saying very little and the other naming, now and then, what the evening is like.

The contact can be easy, and two things about it belong to this pair of planets.

A good fit can wait to be used. One of you may have a question that would suit the other's mood and not ask it; the other may have a feeling that could find words and not mention it. Each of you can wait for the other to go first.

The two of you may also run at different speeds. A thought can be finished while a feeling is still forming, or a feeling can be ready while the words are still being weighed, and either of you may be the faster one at different moments.

The older sources used here name no aspect between the Moon and Mercury, so they say nothing about a Moon and a Mercury a sixth of the circle apart. The only passage in them that names the Moon together with Mercury as a pair is a line in William Lilly's *Christian Astrology* (1647, Book III, p. 638) about planets standing in each other's places across two charts. The line is not among the passages checked for this page, so nothing from it is used here. The opposition rule on the same page mentions Mercury and the Moon only as planets the Sun or Mars might face, and nothing from it is used either. Nothing in the sources used here separates the sextile from the trine.

The distinction this page draws, that a sextile reads as a fit between differences because it usually joins fire with air or earth with water, is based on the kinds of sign a sextile usually joins. It is an editorial reading, not something the older books say about the Moon and Mercury. The same goes for everything else on this page: who the Moon person and the Mercury person are, what each brings and may want, the element variations and the sketches, which are illustrations.

• One of you may start a thought and the other may shape it into something that works.
• What you say can change form once the second person has answered.
• The way one of you talks is not the way the other would, and you may like that.
• A way of saying it that suits both of you may be found.
• Others describe you as a good pair to have in a conversation.
• Now and then a question goes unasked because each of you thought the other would speak first.