Sidereal Sun Sign Dates
Sidereal Virgo Dates
September 17 to October 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 Virgo on approximately September 17 and leaves on approximately October 16. This corresponds to most of what tropical astrology calls Libra. If you were born between roughly September 17 and October 16, your sidereal Sun sign is Virgo.
Why does sidereal Virgo start on September 17?
The September equinox (around September 22 to 23) falls in early sidereal Virgo. In the tropical system this moment marks 0° Libra, the balance point associated with relationships and justice. In the sidereal system the equinox sits at roughly 6° Virgo, placing the astronomical balance point of the year inside the sign of analysis and discernment rather than partnership. The star Spica, which anchors the Lahiri ayanamsa definition at 0° sidereal Libra, sits just past the Virgo boundary. The solar ingress shifts about one day every 72 years.
What if you were born on the cusp?
People born in the last week of tropical Virgo (roughly September 17 to September 22) are in the cusp zone. Your tropical Sun is Virgo, but your sidereal Sun may also be Virgo if the tropical solar degree at birth is less than 24°. Calculate 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.