Western zodiac

Gemini

May 21 – Jun 20 (approximate) · Air · Mutable

You think in conversations and learn everything twice.

Dates are approximate: sign transitions vary slightly by year and time; your exact sign is calculated astronomically.

Why Gemini is Gemini

Air + Mutable + Mercury

Air concerns ideas and exchange; Mutable signs adapt and distribute; Mercury is the classical planet of language, trade and movement. Together they produce the Gemini emphasis on curiosity, conversation and range: several threads at once, and a talent for connecting them. The restlessness follows from the same recipe.

Gemini at a glance

Element: Air; Air concerns ideas and exchange: language, connection, perspective.
Modality: Mutable; Mutable signs close a season and adapt; they change and distribute things.
Traditional ruler: Mercury; The classical rulership, which AsterNym reads by.
Opposite sign: Sagittarius; The sign 180° away, which shares Gemini's modality and completes its axis.
Degrees: 60°–90° tropical zodiac; Thirty degrees of the ecliptic, measured from the March equinox. Every sign is exactly thirty; the constellations behind them are not.
Seasonal position: Late spring, Northern Hemisphere; The tropical zodiac follows the seasons of the Northern Hemisphere. South of the equator the calendar dates are the same and the season is the opposite.

Strengths

Curiosity and connection: the tradition's summary of what the combination above is for.

Shadow / growth edge

Depth: staying with one thread past the interesting part.

Relationships

Gemini is traditionally read as needing a partner it can talk to about everything. The classical caution is boredom, and staying with one thread past the interesting part.

Work and ambition

The tradition suits Gemini to words, ideas, teaching and media: anything with variety, an audience and more than one thing happening.

Gemini as Sun, Moon and Rising

In modern Western astrology the Sun, Moon and Rising are often called the “Big Three”: the Sun is read through identity and direction, the Moon through emotional needs and instinct, and the Rising through how you enter the world. The same sign plays a different role in each.

☉ Gemini Sun: What it describes: The sign the Sun occupied on your birth date. In modern Western astrology it is read through identity, vitality and direction; traditional astrology read it for the life's honour and the father, and by sect.; How Gemini tends to express here: A Gemini Sun is traditionally read as identity formed in exchange: the person who becomes themselves out loud, in dialogue, and who needs variety the way others need rest.; What it does not mean: It does not mean your whole personality is this sign. Nine other bodies and the houses have a say.
☽ Gemini Moon: What it describes: The sign the Moon occupied at your birth. Modern astrology reads it through emotional needs and instinct; traditional astrology read it for the body, the mother, and the fluctuating conditions of a life.; How Gemini tends to express here: A Gemini Moon is traditionally read as feelings processed by talking them through. Silence may read as distance, and a problem unspoken can feel unsolved.; What it does not mean: It does not mean your feelings are fixed. It describes what tends to settle you, not what will happen to you.
↗ Gemini Rising: What it describes: The sign rising on the eastern horizon at your birth, from the exact time and place. Traditionally the sign of the body and of how life meets you; in modern shorthand, presentation and approach.; How Gemini tends to express here: Gemini Rising is traditionally read as a quick, light, approachable manner: people tend to open up fast, and to assume the person is less serious than they are.; What it does not mean: It does not mean your entire personality is this sign. It is the door, not the house.

Gemini’s opposite: Sagittarius

Gemini and Sagittarius sit 180° apart, and both are Mutable: both move and adapt. Gemini gathers information close at hand; Sagittarius looks for meaning at a distance. The axis is about knowledge and belief, the local fact and the far horizon, and each sign can find the other's questions beside the point.

Explore Sagittarius →

The three decans of Gemini

A sign is thirty degrees wide, and the tradition has never treated all thirty as identical. Each splits into three ten-degree decans, roughly the first, middle and last ten days the Sun spends here. Two systems assign a planet to each decan and they disagree, so both are shown and named. Your decan is decided by your degree of Gemini, not your birthday; your natal chart gives it exactly.

Gemini I
0°–10° Gemini
Modern triplicity decan: Gemini · ruled by Mercury. In the triplicity system the first third of Gemini emphasises the sign's own qualities, under its own ruler.
Traditional Chaldean face ruler: Jupiter. In the older Chaldean face system these same ten degrees are assigned to Jupiter.
Gemini II
10°–20° Gemini
Modern triplicity decan: Libra · ruled by Venus. In the triplicity system these degrees take a Libra colouring, the next sign of Air, and Venus joins Mercury in the reading.
Traditional Chaldean face ruler: Mars. In the older Chaldean face system these same ten degrees are assigned to Mars.
Gemini III
20°–30° Gemini
Modern triplicity decan: Aquarius · ruled by Saturn. In the triplicity system these degrees take a Aquarius colouring, the third sign of Air, and Saturn joins Mercury in the reading.
Traditional Chaldean face ruler: Sun. In the older Chaldean face system these same ten degrees are assigned to Sun.

The first is a common modern triplicity scheme: the three signs of the element in order, starting from this one. The second is the Chaldean face system, older and still standard in traditional and tarot work, which runs the seven visible planets in order of apparent speed through all thirty-six faces without regard to sign. Two books can give different decan rulers for the same degree without either being wrong; they are using different systems. AsterNym shows both rather than picking one quietly.

Famous Gemini charts

Public figures whose published birth date puts the Sun in Gemini:

Where does Gemini appear in your chart?

You may carry Gemini as your Sun, your Moon, your Rising, or in none of the three and somewhere else entirely.

Discover where Gemini appears in my chart →Today’s reading →