About Michael Erlewine
of the "square" aspect, only here we have a measure of
the amount of change required for the two planets to
become one—we have an index of change.
This technique is one of a number of techniques that
are very useful for charts where there is no exact birth
time. For each planet we can determine the percentage
of difference between the geo and the helio position. In
addition, we can calculate a total for the entire chart—
using all of the planets, but leaving aside the Sun and
the Moon. And then for each planet we can determine
where in the retrograde cycle it is. Is the geo position
ahead of the helio? Is it ahead and direct in motion, or
ahead and retrograde in motion? Or, is the geo position
behind the helio position? Again, is it behind and direct
in motion or behind and retrograde in motion?