The mid-heaven is taken as an important point it is the point of self-mastery. The mid-heaven is often more, or less than ninety degrees (three signs) from the ascendant, therefore it is not often placed on the tenth house cusp, but marked where it appears in the mid-heaven according to the latitude and longitude of birth. T he zodiac is erected in the plane of the Earths orbit around the Sun which comprises of a 360 degree circle that surrounds the Earth. “ Equal house system is the only system that is erected in the plane of the Earths orbit. Equal house systems are especially useful for people born in the northernmost and southernmost latitudes, and this system is the most popular one in use outside of the United States.” All the houses have the same degree on each cusp, and there are no interceptions. “Another of the three most popular house systems is Equal houses which is just what its name implies. In Equal house of course it can be in any house from 8th to 12th.
