July 23 - August 22
Ruled by Sun · Vedic name Simha
Leo is the fixed fire sign ruled by Sun, spanning July 23 - August 22 in the Western tropical zodiac. In Vedic astrology it is known as Simha and falls in the sidereal zodiac roughly 24° earlier, and in Hellenistic astrology its strength is judged by Sun's dignity and the chart's sect. This guide reads Leo through all three traditions, where they agree and where they diverge.
| Attribute | Western | Vedic | Hellenistic |
|---|---|---|---|
| Sign name | Leo | Simha | Leo |
| Zodiac | Tropical | Sidereal (~24° earlier) | Tropical |
| Reads ruler by | Modern rulership | Graha + nakshatra | Dignity + sect |
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The Sun, the ruler of Leo, is the center of our solar system and the primary symbol of conscious identity, vitality, and purpose in astrology. As ruler of Leo, the Sun expresses its most creative, authoritative, and self-expressive qualities. The Sun governs the life force, the ego, the father or authority figures, and one's fundamental sense of self and mission. In traditional astrology, the Sun is a diurnal luminary and a benefic of the day sect, associated with clarity, honor, and the visible world. Understanding the Sun in a birth chart reveals the native's core identity, what they are growing toward, and where they find their most authentic expression of purpose.

As a fixed fire sign, Leo represents the sustained flame, the hearth fire that warms a gathering, the bonfire that burns steadily through the night. Fixed signs concentrate and sustain the energy of their element, while fire signs deal with inspiration, identity, and creative will. Together, fixed fire produces the most radiant and enduring expression of personal power in the zodiac. This combination gives Leo its characteristic magnetism and its capacity to hold center stage. Unlike cardinal fire (Aries), which ignites and initiates, or mutable fire (Sagittarius), which explores and disperses, fixed fire radiates, sustains, and commands loyalty. It is the light that draws all eyes, the warmth that makes a space feel like home.
By Mira, Starwell's resident reader. Placements computed with the Swiss Ephemeris across Western, Vedic, and Hellenistic traditions. Updated June 7, 2026.