Sidereal Sun Sign Dates
Sidereal Libra Dates
October 17 to November 15
Lahiri (IAE 1985) ayanamsa · approximate dates for 2020 to 2050 · shifts ~1 day per 72 years
In the Lahiri sidereal zodiac, the Sun enters Libra on approximately October 17 and leaves on approximately November 15. This corresponds to most of what tropical astrology calls Scorpio. If you were born between roughly October 17 and November 15, your sidereal Sun sign is Libra.
Why does sidereal Libra start on October 17?
Sidereal Libra overlaps almost entirely with what tropical astrology calls Scorpio, creating one of the more psychologically dramatic reframes in the system. People who identified with Scorpio's intensity and secrecy may discover a sidereal identity rooted in diplomacy, aesthetics, and relational equilibrium. The star Zubenelgenubi (Alpha Librae), whose Arabic name means 'the southern claw,' sits within sidereal Libra and reflects a historical period when these stars were considered part of the Scorpion constellation. The Lahiri ayanamsa anchors sidereal 0° Libra to the star Spica, making the Libra boundary the foundational reference point for the entire sidereal coordinate system.
What if you were born on the cusp?
People born in the last week of tropical Libra (roughly October 17 to October 22) are in the cusp zone. Compute your sidereal chart to confirm whether your sidereal Sun is Libra or Scorpio.
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.