Sidereal Sun Sign Dates
Sidereal Taurus Dates
May 15 to June 14
Lahiri (IAE 1985) ayanamsa · approximate dates for 2020 to 2050 · shifts ~1 day per 72 years
In the Lahiri sidereal zodiac, the Sun enters Taurus on approximately May 15 and leaves on approximately June 14. This corresponds to most of what tropical astrology calls Gemini. If you were born between roughly May 15 and June 14, your sidereal Sun sign is Taurus.
Why does sidereal Taurus start on May 15?
The Pleiades star cluster, the most recognizable star formation associated with Taurus in ancient traditions, still falls within sidereal Taurus. Sidereal proponents cite this as evidence that the sidereal zodiac preserves the original astronomical anchors the zodiac was built on. People who discover sidereal Taurus after a lifetime of identifying as tropical Gemini often find the fixed earth-sign qualities (persistence, sensory orientation, deliberate pace) explain aspects of their personality that never quite fit the mutable air-sign archetype they grew up reading about. The ingress date shifts approximately one day every 72 years due to precession.
What if you were born on the cusp?
People born in the last week of tropical Taurus (roughly May 15 to May 20) are the cusp zone for this shift. Your tropical Sun is Taurus but your sidereal Sun may also be Taurus if you were born on or before the sidereal Gemini ingress. For dates within two days of the boundary, calculate your exact sidereal chart to confirm, since the solar crossing time within the day determines the sign.
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.