Birth chart for Gemini
Your Sun in Gemini is one placement out of ten. It's the part every Gemini shares; the other nine are what make your chart yours. Here's what is fixed, what can vary, and how your birth time decides the rest.
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What every Gemini chart has in common
The Sun in Gemini: a mutable air sign ruled by Mercury. In 2026 the Sun enters Gemini on May 21 at 00:37 UTC and moves into Cancer on June 21; across recent decades the season starts on May 20 or 21 and ends on June 20 or 21, so the boundary days depend on the year and hour.
A Gemini Sun makes a mind that genuinely runs faster than most. You learn quickly, talk quickly, and link ideas across domains in a way that surprises specialists. Your gift is the connection — between two unrelated fields, between two people who'd never meet without you, between an old idea and a new use for it. You're a natural translator.
What people miss about Gemini is that the restlessness isn't shallow. You change subjects because you've actually finished thinking about the previous one, not because you can't focus. The boredom others read in you is often just your processing speed — you got the main beats already and you're ready to move. The people in your life who can match your tempo are the ones you keep around.
Mercury and Venus: the placements that can't wander far
Two planets are tied to the Sun by geometry. Mercury never sits more than about 28° from it, so a Gemini Sun always has Mercury in Taurus, Gemini, Cancer. Venus stays within about 47°, so it lands in Aries, Taurus, Gemini, Cancer, Leo — most often the middle three. That's why Geminis think and love in a recognisable handful of styles rather than twelve.
Your Moon: twelve possibilities
The Moon changes sign every two to three days, so it can be anywhere. It is the biggest single reason two Geminis feel different from each other. Pick yours:
- Gemini Sun, Aries Moonpioneering · direct · brave
- Gemini Sun, Taurus Moonsteady · sensual · loyal
- Gemini Sun, Gemini Mooncurious · witty · adaptable
- Gemini Sun, Cancer Moonprotective · intuitive · loyal
- Gemini Sun, Leo Moongenerous · dramatic · loyal
- Gemini Sun, Virgo Moonprecise · helpful · analytical
- Gemini Sun, Libra Moondiplomatic · aesthetic · fair
- Gemini Sun, Scorpio Moonintense · penetrating · loyal
- Gemini Sun, Sagittarius Moonadventurous · honest · philosophical
- Gemini Sun, Capricorn Moonambitious · disciplined · patient
- Gemini Sun, Aquarius Moonoriginal · detached · humanitarian
- Gemini Sun, Pisces Moonintuitive · compassionate · dreamy
Birth time: your rising sign and where the Sun sits
At sunrise the Sun is on the horizon, so a Gemini born at dawn has Gemini rising and the Sun in the 1st house. Every two hours or so the horizon moves one sign along and the Sun climbs one house. This table is a rough guide — the ascendant's speed changes with latitude and season — but it shows why the time matters.
| Born | Rising sign (approx.) | Sun's house |
|---|---|---|
| Around sunrise | Gemini rising | 1st house |
| ~2 h after sunrise | Cancer rising | 12th house |
| Late morning | Leo rising | 11th house |
| Around midday | Virgo rising | 10th house |
| Early afternoon | Libra rising | 9th house |
| Late afternoon | Scorpio rising | 8th house |
| Around sunset | Sagittarius rising | 7th house |
| Early evening | Capricorn rising | 6th house |
| Late evening | Aquarius rising | 5th house |
| Around midnight | Pisces rising | 4th house |
| The small hours | Aries rising | 3rd house |
| Before dawn | Taurus rising | 2nd house |
Common questions
What is a Gemini birth chart?
A birth chart is the whole sky at your birth: Sun, Moon, rising sign, all ten planets and the houses they fall in. "Gemini birth chart" usually means the chart of someone whose Sun is in Gemini — the Sun is one placement out of ten, so two Geminis can have very different charts.
Do all Geminis have the same chart?
No. They share the Sun in Gemini, and their Mercury is always in Taurus, Gemini, Cancer, but the Moon can be in any of the twelve signs, the rising sign depends on birth time and place, and the outer planets depend on the year. The shared Sun explains why Geminis recognise each other; the rest explains why they are not interchangeable.
When does Gemini season start in 2026?
In 2026 the Sun enters Gemini on May 21 at 00:37 UTC and enters Cancer on June 21. Across 1980–2030 the start falls on May 20 or 21 depending on the year, so people born on the boundary day should check the exact time.
Do I need my birth time?
For the Sun, Mercury, Venus and the outer planets, no. For the rising sign and houses, yes — they change every two hours or so. The Moon changes sign every two to three days, so a time helps on about one day in three. The free calculator works either way and tells you which parts depend on the time.
See your whole Gemini chart
Sun, Moon, rising, every planet and house, and the aspects between them — computed from your birth details, free. Then decide if you want it read.