Spiritual Portal

https://www.wildwitchwest.com/single-post/2016/05/25/Astrological-Nadir-Embracing-and-Healing-the-Past

The nadir, or Imum Coeli (IC), Latin for “bottom of the sky,” is one of the four major angles in an astrological birth chart, and definitely the least talked about.
 
It lies opposite the Midheaven—a point on our chart that represents our public life and persona, which gets a lot of attention. Our nadir (IC) signifies our depth and needs, a part of us that we often don’t share with others. While the rising and descendant axis of our charts navigates the relationship between self and others, the Midheaven and nadir showcases the polarity of our outer and inner worlds.
 
The IC sits on the cusp of the fourth house associated with family lineage, home environment, and family influences. Similarly to the moon, our nadir shows us our needs and emotional tendencies, though it's much more than that. When you looking at your birth chart, the nadir is below the horizon line of the ascendant and is the lowest place in our chart, therefore representing our foundation and roots. In this way, the IC also reveals the type of environment best for our physical well-being.
A History of the Nadir
In ancient Greece the IC was considered to be our underworld. Psychologically speaking, it can reveal our unconscious self and what ancestral wounds we came here to heal. It is the point of our chart that we turn to for self-examination and propels us into personal evolution. Like the projections of our descendent, the nadir houses the parts of us we may have disowned. Until we are able to reclaim these parts, we often cannot manifest the divine aspirations of our Midheaven. Many times the skills we learn through our IC struggles are the strengths that propel us into our destiny.