Sidereal Sun Sign Dates
Sidereal Leo Dates
August 17 to September 16
Lahiri (IAE 1985) ayanamsa · approximate dates for 2020 to 2050 · shifts ~1 day per 72 years
In the Lahiri sidereal zodiac, the Sun enters Leo on approximately August 17 and leaves on approximately September 16. This corresponds to most of what tropical astrology calls Virgo. If you were born between roughly August 17 and September 16, your sidereal Sun sign is Leo.
Why does sidereal Leo start on August 17?
Sidereal Leo spans mid-August to mid-September, a period that tropical astrology assigns to Virgo. The Virgo constellation is one of the largest in the zodiac sky, but the Lahiri sidereal system uses equal 30-degree divisions regardless of constellation size. The annual Perseid meteor shower typically peaks in mid-August, coinciding with the start of sidereal Leo. People moving from tropical Virgo to sidereal Leo often notice a shift from the analytical, service-oriented archetype they previously identified with toward themes of self-expression and creative authority. The ingress shifts about one day every 72 years.
What if you were born on the cusp?
People born in the last week of tropical Leo (roughly August 17 to August 22) are in the cusp zone. Your tropical Sun is Leo but your sidereal Sun may also be Leo depending on the exact year and date. Compute your sidereal chart to confirm.
Get your complete sidereal chart
The Sun sign dates above are approximate. Your full chart includes Moon, rising, and all planets in the Lahiri sidereal zodiac, plus the exact ayanamsa applied to your birth date.