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Zodiac sign · Mutable air · ruled by Mercury

Gemini

Gemini is the Sun sign of anyone born while the Sun is in Gemini: in 2026, from 21 May 2026, 00:37 UTC to 21 June 2026, 08:25 UTC. The dates move by up to a day from year to year, so a birthday at either end needs the year, and sometimes the hour, to settle its sign. The Sun is next in Gemini from 21 May 2027.

Gemini is a mutable air sign ruled by Mercury; its symbol is the twins. Astrologers read it for the way it connects. Of the 6,194 well-known people in StarMap's dataset, 485 have the Sun in Gemini for the whole of their birth date; Donald Trump, Marilyn Monroe and Jean-Paul Sartre are among them. 28 more were born on a day the Sun entered or left Gemini and are left out, because the hour decides and StarMap has no birth time for them.

Donald Trump and Marilyn Monroe were both born with the Sun in Gemini.Is your Sun in Gemini?Draw your birth chart, free: your Sun, Moon and rising sign from the real sky

Gemini dates, year by year

YearThe Sun enters Geminiand leaves
202520 May 2025, 18:55 UTC21 June 2025, 02:43 UTC
202621 May 2026, 00:37 UTC21 June 2026, 08:25 UTC
202721 May 2027, 06:18 UTC21 June 2027, 14:10 UTC
202820 May 2028, 12:09 UTC20 June 2028, 20:02 UTC

The Sun is next in Gemini from 21 May 2027. The dates are the same everywhere on Earth, in UTC; in a time zone far from Greenwich the entry can fall on the evening before or the morning after.

Born on the edge: 21 May and 21 June

  • 21 May, the first day of Gemini season this year, is shared with Taurus. Since 1900, the Sun was in Gemini all day in 21 years, in Taurus all day in 11, and changed sign during the day in 95, when the hour and place of birth decide.
  • 21 June, the last day of Gemini season this year, is shared with Cancer. Since 1900, the Sun was in Gemini all day in 36 years, in Cancer all day in 5, and changed sign during the day in 86, when the hour and place of birth decide.

The three decans of Gemini in 2026

Astrologers divide each sign into three decans of ten degrees, and read the second and third as coloured by the other two air signs (Libra and Aquarius). The Sun takes about ten days to cross each.

  • Decan 1 · 0° to 10° · 21 May 2026, 00:37 UTC to 31 May 2026, 10:32 UTC
  • Decan 2 · 10° to 20° · 31 May 2026, 10:32 UTC to 10 June 2026, 21:14 UTC
  • Decan 3 · 20° to 30° · 10 June 2026, 21:14 UTC to 21 June 2026, 08:25 UTC

Gemini traits

Gemini connects. The sign is read for curiosity and exchange: a quick mind, a quicker tongue, and an appetite for new people, new facts and two conversations at once. A Gemini Sun tends to be versatile, funny, easily bored and hard to pin down, with a gift for seeing both sides that can look like having no side at all.

The shadow side is scatter: a dozen beginnings and few endings, a restlessness that mistakes novelty for progress, and a nervous energy that talks rather than feels. Astrologers describe the sign's work as choosing which of its many threads to follow to the end.

Gemini in love

In love, Gemini wants to be interested first and interesting second. Talk is the real intimacy; silence worries it. The sign is drawn to partners who keep it guessing and bored by those who do not. Its lesson is that staying can be as lively as leaving, if the conversation keeps going.

Gemini at work

At work, Gemini thrives where information moves: writing, teaching, media, selling, anything with variety and an audience. It learns fast, explains well and tires of repetition. Long solitary projects are the hard case; a Gemini with two jobs and a side project is often happier than one with a single desk.

What people get wrong: that Gemini is two-faced. The twins stand for two minds in one person, not for deceit, and the sign's habit of arguing both sides is how it thinks, not how it lies. A Gemini who has stopped changing its mind is usually a Gemini who has stopped listening.

A Sun sign is one placement of ten. The Moon, the rising sign and the planets change how it plays out: a Gemini Sun with a Sagittarius Moon reads differently from one with the Moon in Gemini too. Draw your whole chart to see yours.

Famous Gemini Suns

All 485 famous Gemini Suns, best known first, each with a birth chart.

Gemini in the rest of the chart

The Sun is not the only body that can be in Gemini. Each of these has its own page: what it means, who has it, and when the body is in Gemini.

Gemini and the other signs

  • Same element (air): Libra and Aquarius, a trine apart, read as the signs that understand Gemini without trying.
  • Opposite: Sagittarius, six months away, read as the sign Gemini is drawn to and argues with.
  • Same modality (mutable): Virgo and Pisces, a square apart, the friction that gets things done.
  • Two signs either side: Leo and Aries, a sextile apart, easy company of a different kind.

Gemini with every sign, each pairing with the famous couples who have it: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces.

Sun signs are the roughest measure of two people. Compare two whole charts for the aspects between them.

Questions people ask

What are the Gemini dates?

In 2026 the Sun is in Gemini from 21 May 2026, 00:37 UTC to 21 June 2026, 08:25 UTC. Most years it enters on 21 May or the day either side and leaves on 21 June or the day either side; the table above gives the minute for each year. A birthday on one of those edge days needs the year, and sometimes the time and place of birth, to settle its sign.

Is 21 May a Gemini or a Taurus?

Not always. 21 May is the first day of Gemini season in 2026, but the Sun's sign on that date depends on the year: of the 127 years from 1900 to 2026, in 21 the Sun was in Gemini all day, in 11 it was in Taurus all day and in 95 it entered Gemini during the day, so the hour and the place of birth decide. The birthday page for 21 May lists every year.

Is 21 June a Gemini or a Cancer?

Not always. 21 June is the last day of Gemini season in 2026, but the Sun's sign on that date depends on the year: of the 127 years from 1900 to 2026, in 36 the Sun was in Gemini all day, in 5 it was in Cancer all day and in 86 it left Gemini for Cancer during the day, so the hour and the place of birth decide. The birthday page for 21 June lists every year.

What planet rules Gemini?

Mercury. The ruler is read as the sign's manner: where Mercury sits in a Gemini Sun's own chart colours how the sign shows.

What element is Gemini?

Air, with Libra and Aquarius: the three air signs sit a third of the zodiac apart and are read as easy company for one another. Gemini is also mutable, like Virgo and Pisces and Sagittarius, which share its way of acting and are read as the signs it rubs against.

Which famous people are Gemini?

Donald Trump, Marilyn Monroe, Jean-Paul Sartre, George H. W. Bush and Bob Dylan all have the Sun in Gemini. StarMap lists 485 well-known Gemini Suns, each with a birth chart computed from their birth date and place.

Are Gemini men and Gemini women different?

Not in the chart: astrology reads the Sun in Gemini the same way whatever a person's gender. What people describe as the Gemini man is usually Mars in a chart, how someone pursues what they want, and the Gemini woman Venus or the Moon, how they love and what they need; each has its own page for Gemini, with the famous people who have it.

Gemini horoscopes

Dates are computed from the Sun’s position with the astronomy-engine ephemeris, checked against Swiss Ephemeris, in the tropical zodiac. Birth data comes from Wikidata; a person is listed only when the Sun was in Gemini for the whole of their birth date. Readings describe tendencies, for entertainment and self-reflection; StarMap predicts nothing. All twelve signs.

Photo credits (12 photos from Wikimedia Commons)

Each link opens the photo’s page on Wikimedia Commons, which states its author and licence.