What are the Gemini dates?

In the tropical zodiac, the Sun is in Gemini from about May 21 to June 20, the closing third of northern spring. The boundary shifts by about a day year to year, so cusp births need a calculated chart. Indian sidereal astrology places Mithuna, its Gemini, from roughly mid-June to mid-July.

What element and mode is Gemini?

Mutable air: the element of mind and connection in the mode that adapts. It is the zodiac's most agile combination, built for language, movement and variety, and correspondingly averse to repetition and confinement. Its air siblings are Libra (cardinal) and Aquarius (fixed).

Which planet rules Gemini?

Mercury, in his airy expression: the messenger of words, wit, trade and errands, heir of Babylon's scribe-god Nabu and Greece's Hermes. Gemini hosts no classical exaltation, so Mercury governs the sign's house alone.

What are typical Gemini traits?

Bright side: curiosity, articulacy, quickness, versatility, sociability and perpetual youthfulness of mind. Shadow: scatter, inconsistency, glibness and restlessness. As throughout astrology, these describe how planets placed in Gemini behave, most visibly the Sun, Moon or ascendant, not a box every Gemini-born person fits.

What is the myth behind Gemini?

Babylon's Great Twins were Lugal-irra and Meslamta-ea, paired gods guarding the underworld's gate. Greece told of Castor and Pollux, twin brothers one mortal and one divine: when Castor died, Pollux shared his immortality, and the two alternate between heaven and the underworld, the zodiac's great story of loyalty across difference.

Is Gemini really 'two-faced'?

The slander misreads the symbol. The sign's doubling is about perspective and exchange, holding more than one view, speaking more than one language, not duplicity; Babylon's twin gate-gods faced both ways to guard, not to deceive. The genuine shadow is inconsistency and scatter, which is a different fault, and a fixable one.

What does Gemini rule in the body?

The shoulders, arms, hands and lungs: the third station of the zodiacal body, the apparatus of grasping, gesturing and breath. Traditional medicine read respiratory and nervous complaints here, and the sign's association with the hands matches its governance of writing, craft and gesture.

What does a Gemini rising (ascendant) mean?

The world is met with questions, humour and visible quickness; first impressions are of youth and mobility. Mercury becomes the chart's ruler, so his sign, house and aspects tune everything, a Gemini rising with Mercury in exacting Virgo reads very differently from one with Mercury in dreamy Pisces.

Who is Gemini most compatible with?

Tradition looks first to the air signs, Libra and Aquarius, and to the fire signs Aries and Leo, with opposite-sign Sagittarius as the growth-partnership. But sign pairs are the shallowest layer of synastry: real compatibility work compares whole charts, and this platform treats compatibility as self-understanding rather than verdict.

Where does the sign of Gemini come from historically?

From Babylon, where the Great Twins stood among the constellations of the moon's path in the star catalogue MUL.APIN and entered the twelve equal signs at the zodiac's invention around 400 BCE. Greece translated the pair into Castor and Pollux, whose names the constellation's two brightest stars still carry.

The third sign ♊

Gemini, the Twins

The zodiac's first air sign and its great multiplier. Mutable air ruled by Mercury, Gemini is the principle of exchange: language, curiosity, connection, the mind delighting in its own quickness. Its figure has been a pair from the beginning, Babylon's Great Twins guarding the underworld's gate, Greece's Castor and Pollux sharing one immortality between two brothers, because its truth is that nothing means anything alone.

May 21 – Jun 20: tropical dates
Air: element
Mutable: mode

The sign in twelve facets

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

⭐

Babylon's Great Twins

the ancestor MASH.TAB.BA.GAL.GAL

The Great Twins of the Babylonian sky were Lugal-irra and Meslamta-ea, warrior gods who guarded the gates of the underworld, carved in pairs at doorways to watch both directions at once. Twinned vigilance, one office in two bodies: the sign's doubling is original equipment.

👬

Castor and Pollux

the myth Greek dress

Greece saw the Dioscuri: twin brothers of one mother, one fathered mortal and one divine. When Castor was killed, Pollux split his immortality with him, and the two alternate between Olympus and Hades, half-time gods. Loyalty across a fundamental difference: the twins' deepest story.

🌬️

Spring, handed over

the season the threshold of summer

Gemini closes spring and hands it to summer: the season's mutable third, changeable, busy, everything in motion at once. The sign inherits the threshold's talents, quickness, adaptability, traffic in both directions, and its restlessness.

🍃

Mutable air

element & mode the circulator

Air that circulates: not Libra's weighing beam or Aquarius's steady jet stream, but the breeze that goes everywhere and settles nowhere. Mutable air is the zodiac's most agile coordinate, supreme at connecting, translating and noticing, and constitutionally unable to stay on one topic.

☿

Ruled by Mercury

the ruler the messenger's day sign

Mercury rules two signs, and Gemini is his airy home: the Mercury of words, wit, errands and exchange, Babylon's scribe-god Nabu become Hermes of the roads. He gives the Twins their tongue and their speed, and their conviction that everything is more interesting said aloud.

🚪

The unhosted sign

the dignities no classical exaltation

Gemini hosts no classical exaltation: the seven honoured-guest placements pass it by, leaving Mercury alone in his house. Astrologers have read the vacancy kindly, the Twins keep open house for everyone precisely because no single dignitary is installed there.

✨

The twin stars

the stars Castor & Pollux above

The constellation's two brightest stars still bear the brothers' names, near-equal lights standing shoulder to shoulder, among the few zodiacal figures where the picture genuinely matches the name. The sign, as ever, is the thirty-degree segment, not the picture, but the picture is unusually good.

🧍

The hands, arms and lungs

melothesia Gemini rules the hands

Third sign, third station: Gemini governs the shoulders, arms, hands and lungs, the body's instruments of exchange, grasping, gesturing, breathing in and speaking out. The old medicine read afflictions of breath and nerve here, and the sign's people famously talk with their hands.

📋

Gemini in the chart

the placements Sun, Moon, rising

The Sun in Gemini identifies through curiosity and lives at least two lives in parallel. The Moon in Gemini metabolises feeling by talking it through, mood follows conversation. A Gemini ascendant meets the world asking questions, and hands the chart to Mercury. Any planet here quickens, doubles and verbalises.

🕉️

Mithuna, the Vedic pair

in Jyotisha sidereal dates

Jyotisha keeps the sign as Mithuna, the couple, pictured as a man with a club and a woman with a lute, Mercury-ruled and running sidereally from mid-June to mid-July. Its mansions include stormy Ardra, the star Betelgeuse, and Punarvasu, the return of light.

🏹

Sagittarius, the mirror

the polarity facts and meaning

Across the wheel stands the Archer: the near against the far, the fact against the meaning, the question against the belief. Gemini gathers information and Sagittarius asks what it is for; each is the other's completion, the Twins saving the Archer from dogma, the Archer saving the Twins from trivia.

🔑

The Gemini vocabulary

the keywords light and shadow

Bright side: curious, articulate, quick, versatile, sociable, young at any age. Shadow side: scattered, inconsistent, glib, restless, two-faced in the cheap reading, two-sided in the true one. The work of the sign is turning breadth into connection rather than mere collection.

The sign of exchange

Gemini is the zodiac's third sign and its first of air: the principle of connection arriving right after matter has been established. Mutable air ruled by Mercury, closing spring and handing it to summer, the Twins govern language, curiosity, movement and doubling, every transaction in which something passes between two points. In the chart Gemini describes how a planet communicates and connects, and its native talents are the messenger's: speed, wit, versatility, the gift of finding everything interesting. Its native risk is the messenger's too: motion mistaken for progress, and a life of brilliant fragments.

Twins at the gate

The doubling is original. Babylon's Great Twins, listed in MUL.APIN and carried into the zodiac's twelve, were Lugal-irra and Meslamta-ea, warrior gods who guarded the gates of the underworld; their paired figures were buried at doorways to watch both directions at once, which is as compact a statement of the Gemini mind as antiquity produced. Greece gave the pair its enduring story: Castor and Pollux, the Dioscuri, twin sons of Leda, one mortal and one divine. When Castor died, Pollux refused sole immortality, and Zeus allowed the brothers to share it, alternating between heaven and the underworld. The myth reads the sign exactly: two natures in one bond, difference made workable by loyalty, and a life spent commuting between worlds.

Mutable air, ruled by Mercury

Gemini's coordinates make it the zodiac's most agile sign. As air it works in word, idea and relation; as mutable it belongs to the season-changers, flexible, quick, plural. Its air siblings divide the element's labour, Libra weighs, Aquarius systematises, Gemini circulates: the breeze, the market, the conversation. Mercury's rulership supplies the engine. This is the messenger god in his airy house, Babylon's scribe Nabu become Hermes of the roads, patron of speech, trade, tricks and thresholds, and he gives the Twins their tongue, their speed and their commercial instinct. Tradition notes the sign hosts no exaltation: no honoured guest is installed in Gemini's house, which readers of the dignities have glossed generously, the Twins keep open house precisely because no dignitary occupies it.

The season and the stars

Gemini closes spring: the mutable third of the season, when everything is in motion and the year is busy handing itself to summer. The sign inherits the threshold's character, traffic, errands, simultaneity, and its stars match its name better than almost any other zodiacal figure: the constellation's two brightest lights are still called Castor and Pollux, near-equal, shoulder to shoulder. The sign, as the invention of the zodiac page explains, is the thirty-degree segment rather than the picture, but in Gemini's case the picture cooperates.

Gemini in the chart

The Sun in Gemini identifies through curiosity: such people are interested for a living, whatever their job title, and typically run two of everything, careers, hobbies, selves, without feeling divided. The Moon in Gemini metabolises emotion verbally, mood improves when talked through, and worry is what happens when the words stop. A Gemini ascendant meets the world asking questions and gives the chart to Mercury, whose sign, house and aspects then tune the whole instrument. Mercury in Gemini, at home, is the zodiac's quickest mind; Venus here flirts in language and loves variety; Mars in Gemini fights with words and wins on agility. Jupiter, in detriment, finds breadth easily and depth with effort. Any planet in the Twins is quickened, doubled and given something to say.

The hands, the lungs, the voice

In the zodiacal body Gemini takes the shoulders, arms, hands and lungs: the apparatus of exchange, grasping and giving, breathing in and speaking out. The old medicine, whose Babylonian roots the micro-zodiac page traces, read afflictions of breath and nerve under the Twins, and the observation that Gemini people talk with their hands is as old as the observation that they talk. The correspondence is the sign in miniature: even in the body, Gemini is where the inside and the outside trade.

Mithuna and the mirror of Sagittarius

Jyotisha keeps the sign as Mithuna, the couple, a man with a club, a woman with a lute, Mercury-ruled, sidereally mid-June to mid-July, containing the storm-mansion Ardra at Betelgeuse and generous Punarvasu, the return of light. And across the wheel from the Twins stands the Archer, the axis of information and meaning. Gemini collects facts; Sagittarius asks what they are for. Jupiter, ruler of the far shore, is in detriment in Gemini, as Mercury is in Sagittarius: the scheme's way of saying each sign lacks precisely what the other has. The Twins mature by aiming their curiosity; the Archer by checking his conclusions. Between them runs astrology's whole theory of knowledge, in two signs.

How to read this page

The cards above give the sign's twelve facets: ancestry, myth, season, element and mode, ruler, the vacant exaltation, stars, body, chart placements, the Vedic parallel, the polarity and the working vocabulary. For the ruler's own page, see Mercury in the planets library; for the system, the twelve signs library; for the deep history, the Babylonian pages. Gemini 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 Gemini from about May 21 to June 20, the closing third of northern spring. The boundary shifts by about a day year to year, so cusp births need a calculated chart. Indian sidereal astrology places Mithuna, its Gemini, from roughly mid-June to mid-July.
: Mutable air: the element of mind and connection in the mode that adapts. It is the zodiac's most agile combination, built for language, movement and variety, and correspondingly averse to repetition and confinement. Its air siblings are Libra (cardinal) and Aquarius (fixed).
: Mercury, in his airy expression: the messenger of words, wit, trade and errands, heir of Babylon's scribe-god Nabu and Greece's Hermes. Gemini hosts no classical exaltation, so Mercury governs the sign's house alone.
: Bright side: curiosity, articulacy, quickness, versatility, sociability and perpetual youthfulness of mind. Shadow: scatter, inconsistency, glibness and restlessness. As throughout astrology, these describe how planets placed in Gemini behave, most visibly the Sun, Moon or ascendant, not a box every Gemini-born person fits.
: Babylon's Great Twins were Lugal-irra and Meslamta-ea, paired gods guarding the underworld's gate. Greece told of Castor and Pollux, twin brothers one mortal and one divine: when Castor died, Pollux shared his immortality, and the two alternate between heaven and the underworld, the zodiac's great story of loyalty across difference.
: The slander misreads the symbol. The sign's doubling is about perspective and exchange, holding more than one view, speaking more than one language, not duplicity; Babylon's twin gate-gods faced both ways to guard, not to deceive. The genuine shadow is inconsistency and scatter, which is a different fault, and a fixable one.
: The shoulders, arms, hands and lungs: the third station of the zodiacal body, the apparatus of grasping, gesturing and breath. Traditional medicine read respiratory and nervous complaints here, and the sign's association with the hands matches its governance of writing, craft and gesture.
: The world is met with questions, humour and visible quickness; first impressions are of youth and mobility. Mercury becomes the chart's ruler, so his sign, house and aspects tune everything, a Gemini rising with Mercury in exacting Virgo reads very differently from one with Mercury in dreamy Pisces.
: Tradition looks first to the air signs, Libra and Aquarius, and to the fire signs Aries and Leo, with opposite-sign Sagittarius as the growth-partnership. But sign pairs are the shallowest layer of synastry: real compatibility work compares whole charts, and this platform treats compatibility as self-understanding rather than verdict.
: From Babylon, where the Great Twins stood among the constellations of the moon's path in the star catalogue MUL.APIN and entered the twelve equal signs at the zodiac's invention around 400 BCE. Greece translated the pair into Castor and Pollux, whose names the constellation's two brightest stars still carry.

All twelve signs

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