Zodiac signs · Fire Fixed
Leo: the complete guide to the fixed fire sign
Leo about Jul 23 – Aug 22. Element, modality, ruler, and what Leo means for every planet in your chart, The hearth-fire, warmth that gathers a crowd.
By the diosa astrologers · Computed on Swiss Ephemeris · Updated 2026-08-27
Leo about Jul 23 – Aug 22. The hearth-fire, warmth that gathers a crowd. In the wheel of the zodiac, Leo is the sector where energy turns expressive, warm, sovereign, a fire fixed signature ruled by Sun.
The first thing to unlearn: you are not “a Leo” in the way horoscope columns imply. A sign is a style, not a species. The sun passed through Leo when you were born (if your birthday falls about Jul 23 – Aug 22), so your identity wears the style, but every other planet wears its own, and your houses decide where those styles operate. Everyone has all twelve signs in their chart.
The astronomy: what a sign actually is
The zodiac is the sun's annual road: the ecliptic divided into twelve equal 30° sectors, counted from the March equinox point. A “sign” is a season-shaped segment of that road. Western (tropical) astrology anchors the road to the seasons, not the stars, which is why your sun sign tracks the time of year, and why the constellation behind it has drifted (precession) without changing anyone's chart. Both facts are measurable; neither is a matter of opinion.
Receipt, Leo, computed
On Aug 2, 2025 at 12:00 UTC, the sun's tropical longitude inside Leo was Leo 10°27′ , computed by the diosa engine on Swiss Ephemeris. Mid-season dates avoid the boundary days where the ingress time decides the sign; that precision is exactly what the engine is for.
Element & modality: the grammar
Two axes define every sign's temperament. Leo is fire, energetic, self-expressing, combustible, and fixed, it holds and sustains. Multiply the two and you get the signature: Leo is fire that sustains.
The ruler: who answers when Leo calls
Leo is ruled by Sun. In any chart, the condition of the ruler colors how the sign's agenda plays out, strong and well-placed, the style flows; afflicted, it strains. (Traditional rulership is noted where it applies; modern planets co-rule in later traditions. The engine prints which convention a factor used, another receipt.)
Leo through the planets
- Sun in Leo: Sun in Leo means the function expresses in Leo's style, expressive, warm, sovereign.
- Moon in Leo: Moon in Leo means the function expresses in Leo's style, expressive, warm, sovereign.
- Mercury in Leo: Mercury in Leo means the function expresses in Leo's style, expressive, warm, sovereign.
- Venus in Leo: Venus in Leo means the function expresses in Leo's style, expressive, warm, sovereign.
- Mars in Leo: Mars in Leo means the function expresses in Leo's style, expressive, warm, sovereign.
The same logic extends to every placement, what (planet) × how (sign) × where (house). The full method is in the birth-chart guide, and the reading order that makes it usable is in how to read your chart.
Leo in your chart
If the sun was in Leo when you were born, identity wears this style. If it was the moon, needs do. If it was your ascendant, the world meets this style first, see the rising-sign guide for why that depends so heavily on your exact birth minute. To see which of the twelve styles each of your planets wears, computed, not guessed, cast your chart free.
FAQ
When is Leo season?
The sun transits Leo about Jul 23 – Aug 22 in the tropical zodiac. The exact day shifts by about a day year to year because the solar year isn't a whole number of days, the engine computes the precise ingress every year.
What element and modality is Leo?
Leo is a fire fixed sign ruled by Sun. Element describes its temperament; modality describes its mode of operation, fixed signs sustain.
What are Leo traits, honestly?
At strength: leo energy reads as warmth, expression, and generosity. Under pressure, the same qualities are the flaw: every sign's shadow is its virtue overextended. Any trait list that doesn't include the shadow is marketing.
How do I know if Leo is in my chart?
Everyone has Leo somewhere, the question is which planet(s) sit in it and which house it rules in your layout. Cast your chart and read the positions table; the sign column is the "how" of each planet.