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Genastro

Sign compatibility

Leo and Gemini

How the Sun in Gemini and the Sun in Leo relate by element, modality and position, and what two traditions say about the pairing. It does not predict how two people get on.

  • Gemini
  • Leo
Elements
Air and fire
Modalities
Mutable and fixed
Angle between the signs
Sextile (60°), counted by sign

How common is each Sun sign

  • Sun in Gemini8.57%of 2,000,000 simulated births, 4th most common of 12
  • Sun in Leo8.78%of 2,000,000 simulated births, the most common of 12

There is no simulated figure for the pair itself. These are the shares of each Sun sign on its own.

In plain words

  • Sun in Gemini

    In Gemini, the Sun expresses itself in a curious, changeable way.

  • Sun in Leo

    In Leo, the Sun expresses itself in a warm, open way.

Generic readingA generic description in the style of modern astrology, the same for everyone who has this placement. Not a prediction.

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Is your Sun in Gemini or Leo?

Enter your birth details. The same engine as the full calculator computes your chart and checks it against this page. Only your Sun is compared, so a birth time matters only on a day when the Sun changes sign.

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What is being compared in Leo and Gemini?

  1. What is compared

    Two Sun signs

    This page sets the Sun in Gemini against the Sun in Leo: each has an element, a modality and a ruler. No tradition on this site claims to predict how two people get on.

  2. How the signs relate

    Sextile (60°)

    Air (hot and moist) and fire (hot and dry) share the quality hot. Mutable and fixed: one closes a season, the other sits mid-season. Gemini and Leo are 2 signs apart, a sextile (60°) counted by sign. Hellenistic astrologers hold that signs in sextile see each other.

  3. How common it is

    No pair figure

    There is no simulated figure for the pair itself. These are the shares of each Sun sign on its own. Sun in Gemini: 8.57% of simulated births, about 1 in 12; 4th most common of 12. Sun in Leo: 8.78% of simulated births, about 1 in 11; the most common of 12.

How do Leo and Gemini relate?

Leo

Fixed fire

Leo is a positive (yang) sign: fire and air signs are positive, earth and water signs negative.

Gemini

Mutable air

Gemini is a positive (yang) sign: fire and air signs are positive, earth and water signs negative.

Air (hot and moist) and fire (hot and dry) share the quality hot. Mutable and fixed: one closes a season, the other sits mid-season. Gemini and Leo are 2 signs apart, a sextile (60°) counted by sign. Hellenistic astrologers hold that signs in sextile see each other.

How common is each of the two Sun signs?

How common is each Sun sign?

An even split of the 12 signsBars start at zero.Share of simulated births with the Sun in each of the 12 signs. Share of 2,000,000 simulated births (1950–2024), tropical zodiac.

When is the Sun in Gemini and in Leo?

Sun in Gemini, last pass
ended 21 Jun 2026
21 May 2026, 00:36 UTC to 21 June 2026, 08:24 UTC (about 31 days)
Sun in Gemini, next pass
from 21 May 2027
21 May 2027, 06:18 UTC to 21 June 2027, 14:10 UTC (about 31 days)
Sun in Leo, last pass
ended 23 Aug 2026
22 July 2026, 19:13 UTC to 23 August 2026, 02:18 UTC (about 31 days)
Sun in Leo, next pass
from 23 Jul 2027
23 July 2027, 01:04 UTC to 23 August 2027, 08:14 UTC (about 31 days)

Last, current and next passes

  1. Sun in Gemini

    21 May 2026 → 21 Jun 2026 · about 31 days

    last pass

  2. Sun in Leo

    22 Jul 2026 → 23 Aug 2026 · about 31 days

    last pass

  3. Sun in Gemini

    21 May 2027 → 21 Jun 2027 · about 31 days

    next pass

  4. Sun in Leo

    23 Jul 2027 → 23 Aug 2027 · about 31 days

    next pass

  • Each year the Sun is in Gemini from about 20–22 May to 20–22 June (UTC dates, 1900–2050).
  • Each year the Sun is in Leo from about 22–24 July to 22–24 August (UTC dates, 1900–2050).

As of 16 October 2026, 15:22 UTC. Dates are UTC, tropical zodiac, read from the ephemeris's table of sign entries. This page refreshes hourly.

What do different traditions say about Leo and Gemini?

AI-written text that an AI research review then checked against sources. No person has reviewed it; the notes and references behind each check are under its label.

Hellenistic

The astrology of the Greek-speaking Mediterranean from roughly the 1st century BCE to the 7th century CE, as recorded by authors such as Vettius Valens, Dorotheus and Ptolemy.

AI-written, checked by AI

1 Oct 2026

Gemini and Leo are two signs apart, a sextile, which Hellenistic astrologers count as easy. Gemini is a masculine, mutable air sign and Leo a masculine, fixed fire sign. Sextiles and trines join signs of the same gender, here masculine, even though the elements differ: air and fire. Mercury rules Gemini and the Sun rules Leo, so the signs share no ruler, and neither planet has dignity in the other's sign. Mercury is never more than about 28° from the Sun, so the two lords sit in the same sign or in neighboring signs. The sextile is a fact about the signs; the planets' real positions would add more. Applying it to two people's signs is an extension of a one-chart doctrine.

Sources

  • Ptolemy, Tetrabiblos, Book I
  • Paulus Alexandrinus, Introductory Matters

What was checked

An AI research review checked this text against sources on 1 Oct 2026. No person has reviewed it.

Reviewer's notes

Aspects/aversion by sign (Ptolemy I.13, I.16), dignities, genders and modalities confirmed; the block already says it applies a one-chart doctrine to two people's signs as an extension, which is this page's choice and not an ancient claim. Mercury within ~28 deg of the Sun confirmed.

Sources consulted

Modern psychological

The 20th-century Western approach shaped by Alan Leo, Dane Rudhyar and Liz Greene, drawing on Jungian psychology.

AI-written, checked by AI

1 Oct 2026

Gemini and Leo are two signs apart, a sextile, pairing air with fire. Gemini is mutable and Leo fixed. Modern astrology commonly treats fire and air as compatible elements, because air feeds fire. Modern psychological astrology reads a sextile as an opening that takes some effort to use. It associates Gemini with curiosity, talk and variety, and Leo with warmth and a steady sense of purpose. In the traditional scheme Mercury rules Gemini and the Sun rules Leo, so each sign is judged through a different lord. Hellenistic astrologers read the sextile as a mild configuration of ease and look at the planets involved, not at the signs alone, before judging anything. Sign comparison is a starting point, not a measure of a relationship.

Sources

  • Liz Greene, Relating: An Astrological Guide to Living with Others on a Small Planet (1977)
  • Stephen Arroyo, Astrology, Psychology, and the Four Elements (1975)
  • Chris Brennan, Hellenistic Astrology: The Study of Fate and Fortune (2017)

What was checked

An AI research review checked this text against sources on 1 Oct 2026. No person has reviewed it.

Reviewer's notes

Verified: Gemini is 2 signs from Leo (sextile), mutable air with fixed fire; Mercury rules Gemini. Hedged the fire-air claim and added the rulership sentence to reach 110 words. The fire-air 'compatible' framing is confirmed only as a common modern view (secondary), not in Greene's text; the text now says 'modern astrology commonly treats'. Interpretive keywords are consistent with the sign keywords in the project reference data but were not checked against the books' own text; no claim is made about how a pair will fare.

Sources consulted

Where they differ

Hellenistic astrology reasons from technique: essential dignity, sect and configuration by sign. Modern psychological astrology reasons from element, modality and the planet's function. They start from different questions, so the same placement can read differently, and neither reading is the verdict. Both use the tropical zodiac here.

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