Water · Cardinal · ruled by Moon · June 21 – July 22
Cancer.
Cancer is the sign that protects: cardinal water, ruled by the Moon, built to make a home and defend it.
Your chart
Is Cancer your Sun, Moon, or rising sign?
Compute your real chart free and see every placement by degree. A sign means something different in each seat.
The facts
Cancer at a glance
Dates
June 21 – July 22
Element
Water
Modality
Cardinal
Ruler
Moon
The Sun’s sign change drifts by a day across years. Born on the edge? Check your exact date.
What it is
What Cancer actually means
Cancer, in plain language
Cancer is the fourth sign, the cardinal water sign, ruled by the Moon. Cardinal means it initiates; water means it works through feeling and attachment; the Moon means the drive underneath is to nurture, remember, and belong. Cancer is the part of a chart that decides who is family and then acts on it.
A planet in Cancer feels first and reasons second, and it keeps score in memory. The Sun there is a person whose identity is built around the people they protect. The Moon there, in its own sign, is pure receptivity: every room's undertow, felt in the body. Venus there loves by taking care.
The tell
Cancer traits
- You read a room's mood within seconds and adjust yourself to it before you have decided to.
- You remember what people said years ago, in their exact words, especially the things that hurt.
- Home is not a place for you; it is a feeling you can build anywhere, and you will build it for others.
- You go sideways around conflict, then retreat into the shell when it finds you anyway.
The hard part
The shadow
Named, not flattered
Protection becomes control, and care becomes a ledger. You give until you are empty and then resent that nobody noticed. The deeper version is moodiness as weather: letting the day's feeling decide what is true about your life, and pulling everyone in the house into the same forecast.
The move
What to do with it
Somewhere to go
Say what you need out loud, before the resentment has to say it for you. Keep one room, one hour, or one practice that is only yours, not in service of anyone. And when the mood comes in, name it as weather: it is real, it is passing, and it does not get to rewrite the facts.
In love and at work
Cancer in a relationship, Cancer on the job
Cancer in love
Cancer loves by making a world for two and guarding the door. You are loyal to the point of self-erasure, and you need to feel safe before you can be fully present. The work is letting a partner love you back in their own way instead of only the way you would do it.
Cancer at work
You are the one who holds the team together, who notices who is struggling, who builds the culture nobody wrote down. You do your best work where loyalty is returned and the mission feels like family. Cold, transactional environments cost you more than they cost anyone else.
By placement
Cancer in your chart
A sign is worn differently by each planet. Your Sun in Cancer is who you are becoming; your Moon in Cancer is how you feel; your rising sign is how you come across.
Sun in Cancer
Sun in Cancer is here to care, protect, and belong — and feels most itself when it has people to hold.
Moon in Cancer
Moon in Cancer feels everything and feels it in tides — this is the Moon in its own sign, turned all the way up.
Cancer Rising
Cancer rising arrives gentle and a little guarded — soft on the surface, watchful underneath.
Mercury in Cancer
Mercury in Cancer thinks with its feelings and remembers everything — the logic runs through the heart first.
Venus in Cancer
Venus in Cancer loves by caring for you — tender, protective, and needing to feel emotionally safe.
Mars in Cancer
Mars in Cancer fights for the people it loves — indirectly, protectively, and by mood.
Jupiter in Cancer
Jupiter is exalted in Cancer — it grows through care, and gives so generously it can smother. Big-hearted, big home, big appetite for taking people in.
Saturn in Cancer
Saturn is in detriment in Cancer — it puts a wall around the soft center, so the hard lesson is letting yourself need people and be cared for at all.
North Node in Cancer
North Node in Cancer: the direction is toward home, feeling, and care, and the habit you are leaving is the achievement that stands in for being known.
Chiron in Cancer
Chiron in Cancer: the wound is to belonging and being cared for, and the gift is a capacity to make a home for others that you struggle to feel yourself.
Uranus in Cancer
Uranus in Cancer: a generation that broke the inherited family and invented new ways to belong.
Neptune in Cancer
Neptune in Cancer: a generation that idealized home, nation, and motherhood, and was disillusioned by what those ideals demanded.
Pluto in Cancer
Pluto in Cancer: a generation that transformed home, nation, and family, through depression and war.
Compatibility
Cancer with every sign
Where it clicks and where it misfires, pair by pair. Sun signs are the trailer; your real charts are the film.
Go further
More Cancer
Today
Cancer horoscope
The real sky mapped to Cancer’s houses, today and this week.
Famous charts
Public figures with the Sun in Cancer
Verified natal charts, with provenance, that share the placement.
Birthdays
Born on a Cancer date
Every day of the season: the degree, the decan, the cusp facts.
By Moon sign
Cancer Moon with every Moon
Emotional compatibility, pair by pair: the second act after the Sun signs.
Free tool
Birth chart calculator
Your whole chart, Whole Sign houses, by degree. No account needed.
Common questions
Cancer, answered
What are the Cancer dates?
The Sun is in Cancer from about June 21 to July 22, starting at the June solstice. The boundary shifts by a day across years; June 20–21 and July 22–23 births should check their birth year.
What element and planet rule Cancer?
Cancer is a cardinal water sign ruled by the Moon. Cardinal signs initiate, water signs work through feeling and attachment, and the Moon is the drive to nurture, remember, and belong.
Who is Cancer most compatible with?
Cancer tends to click with the other water signs (Scorpio, Pisces) and with earth signs that hold steady (Taurus, Virgo). Cancer–Capricorn is the opposition pair: home and work, both about security. Real compatibility is read from both full charts.
Why is Cancer called moody?
Because it is ruled by the Moon, which changes sign every two and a half days. A Cancer placement feels those shifts directly. The honest version is emotional range and responsiveness; the shadow version is letting each mood decide what is true.
The other signs
Read another sign
Your turn
That's the general read. Yours is specific.
Compute your real chart and Danu reads your Cancer placements by degree, against today's sky.