True Sidereal Chart Calculator

This calculator uses the actual constellations in the sky.

Resources: Chart Key | How to Read a Birth Chart | Order Charts | Professional Reading

This calculator uses the midpoint between the constellations as the sign boundaries. This is different from other forms of sidereal astrology. For example, Vedic and IAU do not use the true size of the constellations along the ecliptic. This chart is a planetarium in astrology chart form.

(Planets within three degrees of another sign are a blend of both signs.)

The chart is accurate within 1 degree for birth dates within the past 100 years.

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