The movement to the elemental lines in the witness of the body is a movement from the visible to the invisible, from the outer to the inner. There is a distinct but parallel movement in the witness of time. That isn’t immediately apparent in the ascription of the elemental letters to the months, but when you examine the way in which the day can be divided into two sets of twelve esoteric hours you can glimpse the elemental lines within the day itself.
As I have been reading about sidereal astrology, I have been trying to work out the conceptual points of contact and divergence between it, tropical astrology, and the material in the Sefer Yetzirah (SY). These last few days, reading the SY, it has begun to come into view. What I am seeing in even a summary account of India’s astrological traditions suggests that the tropical/sidereal distinction doesn’t capture the conceptual ferment in astrological antiquity I am glimpsing through the SY.