The degree of a celestial body is determined by its position relative to the vernal equinox, which is the point on the celestial sphere where the ecliptic (the path that the sun appears to follow in the sky over the course of a year) intersects with the celestial equator (the imaginary line that divides the celestial sphere into two equal halves).
For example, the Sun enters Aries at 0 degrees Aries.
Degrees in a zodiac sign:
- 0°–29° Cardinal - action/outward
- 30°–59° Fixed - static/inward
- 60°–89° Mutable - dualistic/adaptable