Definition of Zodiac

The Zodiac refers to a series of astronomical placements — including the sun, moon, stars and planets — that make up a visible band in the sky. This band occurs on each side of the ecliptic, extending approximately 8 degrees on each side.

Each of the constellations of Zodiac signs is approximately 30 degrees wide, for a total of 360 degrees (a complete circle). Hence the Greek name Zodiac, which translates to “circle of animals”. The bodies in the Zodiac band are constantly moving in transits, which lay the foundation of astrology.

The Zodiac is divided into 12 Zodiac signs (bodies), each one ruling a human element on life:



An ephemeris is a map of the planets. Because the planets are in constant motion, that map is going to change constantly. Ephemerides come in either midnight or noon versions, and show you where the planets are (or were for a date in the past or will be for a date in the future) at either midnight or noon GMT.

Read the full Ephemeris definition