What are the Cancer dates?

In the tropical zodiac, the Sun is in Cancer from about June 21 to July 22, beginning at the summer solstice. The boundary shifts by about a day year to year, so cusp births need a calculated chart. Indian sidereal astrology places Karka, its Cancer, from roughly mid-July to mid-August.

What element and mode is Cancer?

Cardinal water: the element of feeling in the mode that initiates. Cancer opens the summer as the tide of the zodiac, caring first and leading through protection; its water siblings are Scorpio (fixed) and Pisces (mutable).

Which planet rules Cancer?

The Moon, and Cancer is her only rulership, mirroring the Sun's sole rulership of neighbouring Leo. Jupiter is additionally exalted in Cancer at the fifteenth degree, the tradition's statement that generosity thrives best in the ground of care.

What are typical Cancer traits?

Bright side: nurturing, loyal, intuitive, tenacious, protective, deep of memory. Shadow: moodiness, clinging, indirectness and over-defence. As throughout astrology, these describe how planets placed in Cancer behave, most visibly the Sun, Moon or ascendant, not a box every Cancer-born person fits.

What is the myth behind Cancer?

Karkinos, the crab Hera sent to distract Heracles during his fight with the Hydra: it pinched the hero's heel, was crushed, and was set among the stars by the goddess for its loyalty. Behind the Greek story stands Babylon's Crayfish, stationed on the moon's path centuries before the zodiac was cut.

Why is the Tropic of Cancer named after this sign?

Because when the naming was fixed, the sun stood in Cancer at the summer solstice, the moment it reaches its northernmost point and turns back. The Earth's line where the midsummer sun passes overhead took the sign's name, as its southern twin took Capricorn's from the winter solstice.

What does Cancer rule in the body?

The chest, breasts and stomach: the organs of nourishment and holding, fourth station of the zodiacal body that runs from Aries at the head to Pisces at the feet. Traditional medicine read digestive and chest complaints under the Crab.

What does a Cancer rising (ascendant) mean?

The world is met shell-first: gently, indirectly, with warmth that opens as safety is established. The Moon becomes the chart's ruler, so her sign, house and aspects colour everything, and the whole chart runs on lunar weather, rising and falling with the inner tide.

Who is Cancer most compatible with?

Tradition looks first to the water signs, Scorpio and Pisces, and to the earth signs Taurus and Virgo, with opposite-sign Capricorn as the structural complement. But sign pairs are the shallowest layer of synastry: real compatibility compares whole charts, and this platform treats compatibility as self-understanding rather than verdict.

Why is the Moon so important for Cancer?

Because Cancer is her only home: the one sign whose affairs the Moon rules outright. Charts with Cancer prominent therefore run on the Moon's condition, her sign, house, phase and aspects, and the sign inherits her tides: moods that cycle, memory that keeps everything, and instinct that moves faster than argument.

The fourth sign ♋

Cancer, the Crab

The zodiac's first water sign opens at the year's height: the summer solstice, when the sun turns for home. Cardinal water ruled by the Moon, exalting Jupiter, Cancer is the principle of care, home, memory, protection, the feeling life that everything else is built to shelter. Its emblem says it exactly: soft creature, hard shell, sideways approach, unbreakable grip.

Jun 21 – Jul 22: tropical dates
Water: element
Cardinal: mode

The sign in twelve facets

One sign, read from every side: its ancestry, its rulers, its season, its body part, its myth and its meanings in the chart.

⭐

Babylon's Crayfish

the ancestor AL.LUL

Babylon saw a crustacean here too: the Crayfish of the star lists, stationed in MUL.APIN's moon-path and carried into the twelve signs at the zodiac's invention. A water creature at the sun's highest gate, the sky's oldest joke about the softness inside the year's proudest moment.

🦀

The crab of Heracles

the myth Greek dress

Greece told of Karkinos, the crab Hera sent to harry Heracles as he fought the Hydra. It pinched the hero's heel, was crushed underfoot, and was set among the stars by the grateful goddess. A small loyal creature ruined in a war of giants and honoured for it: devotion's monument.

🌞

The solstice gate

the season where the sun turns

Tropical Cancer opens at the summer solstice, the sun's furthest reach and turning point, which is why Earth's northern line of the sun's zenith is the Tropic of Cancer. The sign inherits the turn itself: the moment achievement pivots homeward, and light begins its long return to the hearth.

🌊

Cardinal water

element & mode the tide

Water that initiates: not Scorpio's still depth or Pisces' open sea, but the tide, feeling that advances, encloses and retreats on its own schedule. Cardinal water leads by caring first, and its campaigns are rescues, foundings of families, and the fierce administration of the nest.

🌙

Ruled by the Moon

the ruler the one lunar home

The Moon rules a single sign, and this is it: her one home on the wheel, as the Sun's is Leo next door. She gives Cancer the tides, moods that wax and wane, memory that keeps everything, instinct quicker than argument, and makes the sign the zodiac's barometer of need.

♃

Jupiter exalted

the honoured guest the 15th degree

Jupiter is exalted in Cancer, at the fifteenth degree, by the old Babylonian scheme of secret places. The doctrine's meaning is generous: benevolence grows greatest where care is the ground, and the greater benefic does his best work at the family table rather than the throne room.

✨

The Manger and the Asses

the stars Praesepe

The Crab is a faint constellation with a famous heart: the Beehive cluster, which antiquity called the Manger, flanked by two stars named the Asses feeding from it. Weather-lore watched it, when the Manger dims, rain is coming, one more way this sign has always been read for shelter.

🧍

The chest and stomach

melothesia Cancer rules the breast

Fourth sign, fourth station: Cancer governs the chest, breasts and stomach, the body's organs of nourishment and holding. The old medicine read digestive and chest complaints here, the body keeping the sign's score of feeding, feeling and what refuses to be digested.

📋

Cancer in the chart

the placements Sun, Moon, rising

The Sun in Cancer identifies through care and builds identity around belonging. The Moon in Cancer, at home, feels everything and forgets nothing, the zodiac's deepest reservoir. A Cancer ascendant meets the world shell-first, warmth behind caution, and hands the chart to the Moon. Any planet here softens, remembers and protects.

🕉️

Karka, the Vedic Crab

in Jyotisha sidereal dates

Jyotisha keeps the Crab as Karka, Moon-ruled with Jupiter exalted, running sidereally from mid-July to mid-August. Its mansions include Pushya, the nourisher, classically the most auspicious of all twenty-seven, the sign's theme of care crowned in the lunar zodiac.

⛰️

Capricorn, the mirror

the polarity home and world

Opposite the Crab stands the Goat: the hearth against the summit, private care against public duty, the family against the institution. Cancer nourishes what Capricorn organises, and each starves without the other, the axis every chart walks between belonging and achievement.

🔑

The Cancer vocabulary

the keywords light and shadow

Bright side: nurturing, loyal, intuitive, tenacious, protective, deep of memory. Shadow side: moody, clinging, indirect, defended past all reason, the pinch that will not let go. The work of the sign is holding without gripping, and sheltering others without walling in itself.

The sign of care

Cancer is the zodiac's fourth sign, its first of water, and its homeward turn. Opening at the summer solstice, ruled by the Moon, her only sign, and exalting Jupiter, the Crab governs home, family, memory, protection and the tidal life of feeling. In the chart it describes how a planet cares and is cared for, what it needs, keeps and shelters. Its powers are the deepest in the zodiac's quiet register: loyalty, intuition, tenacity, the long memory of the heart. Its risks are the same powers turned defensive: moodiness, clinging, and the shell mistaken for a home.

Crab, crayfish, and a loyal casualty

Babylon put a crustacean here first: the Crayfish of the star lists, stationed on the moon's path in MUL.APIN and carried whole into the zodiac's twelve, as the Babylonian pages of this compendium recount. Greece supplied the enduring story: Karkinos, the crab that Hera sent against Heracles while he battled the Hydra. The little creature pinched the hero's heel, was crushed for its trouble, and was raised to the sky by the goddess it had served. The myth is minor and the meaning is not: Cancer's emblem is devotion out of scale with its own safety, the small defender in a war of giants, honoured not for victory but for loyalty. Anyone with strong Cancer placements recognises the job description.

The solstice and the tropic

Tropical Cancer begins at the summer solstice: the sun's furthest north, the year's longest day, and the exact point where advance becomes return. The line on Earth where the midsummer sun stands overhead is named the Tropic of Cancer after this gate. The symbolism deserves attention: the zodiac gives its moment of maximum light not to a blazing fire sign but to the tender-bodied Crab, because the year's peak is also its turn toward home. Cardinal water is exactly this, feeling that initiates, the tide that advances and gathers, and Cancer's leadership is real but domestic: rescues, foundings, the fierce administration of the nest.

The Moon's one house, Jupiter's best room

Cancer is the Moon's only rulership, the single sign the fastest light calls home, mirroring the Sun's sole rulership of Leo next door: the two luminaries hold the summer heart of the wheel, and the rulership scheme fans out from them, as the planets library explains. The Moon gives the sign its tides, moods that wax and wane on schedules argument cannot reach, memory that keeps everything, instinct that arrives before reasons. And Jupiter is exalted here at the fifteenth degree, by the Babylonian scheme of secret places: the tradition's judgement that generosity grows greatest in the soil of care, that the greater benefic does his finest work at the family table. Opposite, in Capricorn, Jupiter falls; the Moon there is in detriment, structure being the one place feeling cannot rule.

Cancer in the chart

The Sun in Cancer identifies through belonging: such people know themselves by what they tend, family, home, team, tradition, and defend it past any personal cost. The Moon in Cancer, at home, is the zodiac's deepest reservoir: everything felt, everything remembered, weather changing with the inner tide. A Cancer ascendant meets the world sideways and shell-first, real warmth behind real caution, and gives the chart to the Moon, whose sign, house and aspects then set every room's temperature. Mercury in Cancer thinks in memories and speaks to feelings; Venus here loves by feeding and keeping; Mars, in fall, fights only when the nest is threatened, and then without limit. Any planet in the Crab is softened, deepened and taught to hold on.

The Manger, the body, the mansions

The Crab's constellation is faint but its heart is famous: the Beehive cluster, which antiquity called the Manger, flanked by two stars named the Northern and Southern Asses feeding at it, a nativity scene in the sky centuries before Bethlehem. Classical weather-lore read rain in the Manger's dimming: even the sign's stars were consulted about shelter. In the body Cancer takes the chest, breasts and stomach, the organs of nourishment and holding, fourth station of the zodiacal frame whose Babylonian roots the micro-zodiac page traces. And in the lunar zodiac of India, sidereal Karka contains Pushya, the nourisher, classically the most auspicious of all twenty-seven mansions: the lunar tradition's own verdict on where the wheel keeps its kindness.

The mirror of Capricorn

Cancer's axis runs to Capricorn: hearth and summit, family and institution, care and duty, the private root and the public crown. The Crab nourishes what the Goat organises; the Goat achieves what the Crab shelters. Each unbalanced is a caricature, care that never releases, ambition that never rests, and each is the other's cure. The solstices anchor the axis: Cancer opens at midsummer's turn toward home, Capricorn at midwinter's turn toward light, and every chart lives somewhere on the road between them. The tradition's oldest name for that road is simply life: what you keep, and what you build.

How to read this page

The cards above give the sign's twelve facets: ancestry, myth, season, element and mode, ruler, exaltation, stars, body, chart placements, the Vedic parallel, the polarity and the working vocabulary. For the ruler's own page, see the Moon in the planets library, and Jupiter for the honoured guest; for the system, the twelve signs library; for the deep history, the Babylonian pages. Cancer and its eleven companions are part of the Tarot Academy compendium in all fifty-two languages.

Frequently asked questions

: In the tropical zodiac, the Sun is in Cancer from about June 21 to July 22, beginning at the summer solstice. The boundary shifts by about a day year to year, so cusp births need a calculated chart. Indian sidereal astrology places Karka, its Cancer, from roughly mid-July to mid-August.
: Cardinal water: the element of feeling in the mode that initiates. Cancer opens the summer as the tide of the zodiac, caring first and leading through protection; its water siblings are Scorpio (fixed) and Pisces (mutable).
: The Moon, and Cancer is her only rulership, mirroring the Sun's sole rulership of neighbouring Leo. Jupiter is additionally exalted in Cancer at the fifteenth degree, the tradition's statement that generosity thrives best in the ground of care.
: Bright side: nurturing, loyal, intuitive, tenacious, protective, deep of memory. Shadow: moodiness, clinging, indirectness and over-defence. As throughout astrology, these describe how planets placed in Cancer behave, most visibly the Sun, Moon or ascendant, not a box every Cancer-born person fits.
: Karkinos, the crab Hera sent to distract Heracles during his fight with the Hydra: it pinched the hero's heel, was crushed, and was set among the stars by the goddess for its loyalty. Behind the Greek story stands Babylon's Crayfish, stationed on the moon's path centuries before the zodiac was cut.
: Because when the naming was fixed, the sun stood in Cancer at the summer solstice, the moment it reaches its northernmost point and turns back. The Earth's line where the midsummer sun passes overhead took the sign's name, as its southern twin took Capricorn's from the winter solstice.
: The chest, breasts and stomach: the organs of nourishment and holding, fourth station of the zodiacal body that runs from Aries at the head to Pisces at the feet. Traditional medicine read digestive and chest complaints under the Crab.
: The world is met shell-first: gently, indirectly, with warmth that opens as safety is established. The Moon becomes the chart's ruler, so her sign, house and aspects colour everything, and the whole chart runs on lunar weather, rising and falling with the inner tide.
: Tradition looks first to the water signs, Scorpio and Pisces, and to the earth signs Taurus and Virgo, with opposite-sign Capricorn as the structural complement. But sign pairs are the shallowest layer of synastry: real compatibility compares whole charts, and this platform treats compatibility as self-understanding rather than verdict.
: Because Cancer is her only home: the one sign whose affairs the Moon rules outright. Charts with Cancer prominent therefore run on the Moon's condition, her sign, house, phase and aspects, and the sign inherits her tides: moods that cycle, memory that keeps everything, and instinct that moves faster than argument.

All twelve signs

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