What Cancer shows in a birth chart

Cancer is a cardinal water sign. Its ruling planet is the Moon. The Sun is in Cancer each year from about June 21 to July 22.

Cancer is the fourth thirty degree segment of the tropical zodiac, beginning at the June solstice point. The Sun crosses it from about June 21 to about July 22, and the exact boundary moves a little each year. Water and cardinal describe the material and the timing, and the Moon rules the sign. Jupiter is exalted there and Mars is in fall. Moon Shine AI computes your placements from your own birth data.

Free tool

Enter your birth date, time and place, and you see right away which of your houses Cancer falls in and whether you have a planet in Cancer. No sign-up needed.

Show my chart

Element: Water
Modality: Cardinal
Ruling planet: Moon
Opposite sign: Capricorn
Natural house: 4th house
Exaltation: Jupiter
Fall: Mars
Approximate dates: About June 21 to about July 22

Selene

See which points in your chart fall in Cancer, and where your Moon sits as the ruler that carries them.

Open in the app

Cancer traits

Cancer traits depend on which point of your chart sits in this sign. When the Sun, the Moon, the Ascendant or a planet is in Cancer, this is how it shows in daily life.

Sun in Cancer

You introduce yourself through the people you look after, by saying who you work for and who you work with. What you call yours is whatever you've put effort into and protected. Before you decide, you check how it feels inside, and you won't sign a job that sits wrong, even when it's the right call on paper.

Moon in Cancer

Feelings come in waves, and some evenings you fill up for no reason. When you're upset you pull into your shell with a familiar blanket or an old song. You show closeness by caring for people; you cook, ask whether they're cold, and feed whoever comes to your door.

Cancer rising

When you walk into a crowded room, you look for a familiar face first. Until you feel safe, you talk less and watch more.

Mercury in Cancer

You store what you learn with a place attached, a room, a face, a smell from a kitchen. You remember how someone said a thing more than what they said. Before you explain anything, you check that the person across from you will take it kindly.

Venus in Cancer

You remember the food, the color and the song the person you love likes, and one day you set all of it in front of them. You know you're loved when someone asks how you are and remembers your answer. You hold back at first; where you feel safe, you set the table and give whatever you have.

Mars in Cancer

You don't walk straight at what you want; you sense first whether the room is safe, then move closer bit by bit. If someone says a word against a person you love, you step forward without a second thought. When you're angry you don't shout; you go quiet, keep your distance and wait to be noticed.

Jupiter in Cancer

You trust the people closest to you first; if someone has been in your home, you don't ask for proof. What you grow is a table, a family or a circle of friends, and there's always room for one more plate. You feed, dress and slip pocket money to the people you look after, more than they need.

Saturn in Cancer

You quietly carry the work of the people close to you and never mention that you're tired. On a hard day you make a rule of staying on your feet so they can lean on you. Bringing up what hurt you takes you days.

Uranus in Cancer

You don't do things the way the people close to you do, but you never say it harshly; you quietly do what you know. Told it has always been done this way, you nod and go on your own way. Where you feel safe, you try unusual things without a second thought.

Pluto in Cancer

You don't let go of what you've made yours; even when you sort out old things, half of them go back in the box. When something ends, you shut yourself in at home for a while, then start the same thing again your own way, in a corner nobody walks into.

Signs compatible with Cancer

In traditional astrology, the signs that get along most easily with Cancer are Scorpio and Pisces, which share its element, followed by Taurus and Virgo from the earth element. Capricorn is the opposite sign; the two complete each other, but staying together takes effort. Real compatibility shows when two birth charts sit side by side, and you do that in the Relationship section of the app.

Cancer sky events: November 2026

This section updates every month; dates follow US Eastern time.

This month there is no ingress, station, New Moon or Full Moon in Cancer. Next event, December 23, 2026: The Full Moon falls in Cancer.

The fourth segment, counted from the equinox point

Cancer names a stretch of the ecliptic and nothing more than that. Counting forward from the March equinox point, it is the fourth thirty degree division and runs from ninety to one hundred and twenty degrees. Its opening degree is the June solstice, the moment the Sun reaches its furthest northern position. So the sign has a physical anchor in the sky rather than a symbolic one. It is a measured band. No planet needs to be inside it for the band to exist.

The Sun crosses Cancer from about June 21 to about July 22. Both of those dates are approximations that shift. A tropical year is roughly a quarter of a day longer than a calendar year of 365 days. So each entry falls about six hours later than the one before it. A leap day then resets the drift. Your time zone then moves the boundary again. Two people born on June 21 in different countries can end up with the Sun in two different signs.

Because of that, a birthday sitting within a day of either edge cannot be settled by a list. Only the computed position of the Sun for your date, your clock time and your location answers it. This is also the right place to say the plain thing once. A Sun sign is not the whole person. A chart holds the Moon, the rising sign, every planet, the house cusps and the aspects among them, and Cancer may be one marker among dozens.

Water and cardinal are not the same kind of statement

Element and modality answer two different questions and should be kept apart. The element names the material. Cancer is water, which in this system covers feeling, memory and the way one state flows into another. Scorpio and Pisces share the element. Water is read as responsive and slow to release what it has taken in. That describes the material only. It has not yet told you where the sign falls inside a season, which is the job of the second label.

Cancer is cardinal, and here the label is literal. The sign opens at the June solstice, so it begins a quarter of the year in the same way Aries begins one at the March equinox. Cardinal signs initiate. Fixed signs hold the middle of a season and mutable signs adapt while it dissolves. Aries, Libra and Capricorn are the other cardinal signs. Between them the four solstice and equinox points divide the circle, which is why cardinal placements are often described as starting points.

Together the two labels give a mechanical description. Cancer is responsive material placed at the opening of a cycle. A planet there takes the pattern into its own department. The Moon in Cancer works in its own sign and tends toward a strong internal tide. Mercury in Cancer tends to think through impression rather than argument. Mars in Cancer tends to act indirectly. These are leanings in the material, not predictions, and the wider chart can reinforce them or work against them.

The Moon rules here, with Jupiter raised and Mars lowered

The Moon rules Cancer, and unlike most rulers it keeps only one room. The Sun and the Moon each govern a single sign, while the other classical planets govern two. That makes the link unusually direct. Any Cancer placement is read through the Moon in the same chart, so its sign, its house, its aspects and its phase all matter. A Moon buried in a quiet house delivers the Cancer material one way. A Moon on an angle delivers the same material far more visibly. Phase matters here too. A Moon near the new phase and a Moon near the full phase carry Cancer differently, even in the same degree.

The classical dignity scheme gives Cancer two entries. Jupiter is exalted there, meaning older texts rate Jupiter as operating strongly in that segment. Mars is in fall there, which is the opposite rating. These are strength labels rather than moral verdicts. Mars in fall is not broken and Jupiter in exaltation is not a guarantee of anything. The words describe fit. Mars prefers direct action and Cancer works by indirect approach, so the two methods disagree and the planet has to adapt.

The opposite sign is Capricorn, ruled by Saturn, and the two form a single axis across a chart. That axis is usually read as private ground against public position, and experienced readers treat it as one topic rather than two. Note what this does not mean. An axis between signs says nothing about how two people will get along. Compatibility is synastry work and needs two complete charts, so no claim of that kind can be made from one sign alone.

Where the sign shows up in a real chart

The point occupying Cancer matters more than the word Cancer. The Sun there describes the central direction of a life. The Moon there describes the reflex, the response that arrives before any reasoning does. Venus in Cancer describes how affection moves and what feels valuable. Saturn in Cancer describes where structure gets applied. Four points, four departments, one shared material. Blending them into a single description is the most common way a beginner turns a detailed chart into a vague paragraph.

A Cancer Ascendant is a different order of statement. The rising sign is calculated from the exact minute and place of birth, so a birthday alone cannot produce it. When Cancer rises, the Moon becomes the chart ruler and the whole chart is read through its condition, including its phase and its house. That is structural rather than descriptive. A house cusp in Cancer is a further case. It says the affairs of that house are handled with Cancer material, whether or not a planet sits inside.

An empty Cancer is ordinary and carries no warning. Most charts leave several signs unoccupied, and the material still reaches the chart through the Moon and through the house holding the cusp. A crowded Cancer concentrates attention, and three or more bodies in one sign is what astrologers call a stellium. None of this forecasts an event, names a medical condition or fixes a result. It marks emphasis. What a person does with that emphasis is not visible in the calculation.

Tarot cards for this sign

In tarot, this sign pairs with The Chariot. The sign splits into three 10 degree sections, called decans, and each decan links to one Minor Arcana card.

What are the dates for Cancer?

The Sun crosses Cancer from about June 21 to about July 22. The start is tied to the June solstice, which moves by a few hours each year, so a birthday near either edge needs a real calculation.

What planet rules Cancer?

The Moon rules Cancer and rules no other sign. That makes the link direct, so a Cancer placement is read through the sign, house, phase and aspects of the Moon in the same chart.

Which planets are exalted or in fall in Cancer?

Jupiter is exalted in Cancer and Mars is in fall there. Both are classical ratings that describe how well a planet fits the material of the sign, not a promise of a good or bad outcome.