Day (Earth)
Much of the material in this index on Divisions of the Day, came from The Robin Armstrong School of Astrology, RASA, Level 8, Class # 4, where there are youtube videos explaining this material.
The material here presents the foundational alignment of the I Ching to the hours of the day. It is not presented as a theory, but rather as a system for measuring the light and the dark. The logic that goes with this is revealed, and then the associations of the trigrams to the astrological houses are shown.