Sidereal Sun Sign Dates
Sidereal Scorpio Dates
November 16 to December 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 Scorpio on approximately November 16 and leaves on approximately December 15. This corresponds to most of what tropical astrology calls Sagittarius. If you were born between roughly November 16 and December 15, your sidereal Sun sign is Scorpio. Note: the Lahiri sidereal zodiac uses 12 equal 30-degree signs; the sidereal Scorpio sign is not defined by the Scorpius constellation boundary, which spans only about 7 degrees of ecliptic. The Ophiuchus debate about a 13th sign is not relevant here.
Why does sidereal Scorpio start on November 16?
Sidereal Scorpio overlaps with the period tropical astrology assigns to Sagittarius, so people discovering their sidereal placement shift from the expansive, philosophical archer archetype to the investigative, transformative scorpion. The star Antares (Alpha Scorpii), one of the four ancient Persian Royal Stars, sits in the heart of the Scorpius constellation within sidereal Scorpio. Its name means 'rival of Mars' (anti-Ares), and it was used as a seasonal marker across Mesopotamian, Persian, and Greco-Roman traditions. The ingress date shifts about one day every 72 years as precession continues.
What if you were born on the cusp?
People born in the last week of tropical Scorpio (roughly November 16 to November 21) are in the cusp zone. Your tropical Sun is Scorpio but your sidereal Sun may also be Scorpio depending on the year. Calculate your sidereal chart for a definitive answer.
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.