Night occupies a position of commanding psychological density within the depth-psychology corpus, functioning simultaneously as cosmological boundary, mythological genealogy, initiatory matrix, and phenomenological reality of the sleeping psyche. Hillman, pursuing his archetypal psychology most rigorously, treats Night — personified as Nyx — as a sovereign power whose offspring (Fate, Death, Despair, Desire) constitute the active curriculum of later life’s sleeplessness; to avoid her children through pharmaceuticals or light pollution is to refuse psychic education. Kerényi approaches Night as the primordial spirit of kindliness, enchantment, and wisdom, the mother of all mystery who shelters lovers, guides wayfarers, and speaks through music rather than logos. Corbin introduces a decisive complication: the Iranian Sufi tradition distinguishes between the Ahrimanian night of unconsciousness and the Ineffable Night — luminous blackness, the Night of pure Essence — which is the esoteric darkness of superconscious unknowing. Von Franz, working through alchemical texts and fairy tales, treats the night-to-dawn transition as the decisive movement of the opus, with ‘Aurora Consurgens’ positioned precisely at the threshold between nocturnal suffering and the dawning of gnosis. Campbell grounds night anthropologically in the dream-world’s saturating influence on myth: at night the world sleeps, danger lurks, and the logic of waking life gives way to self-luminous transformation. Across these voices, Night emerges not as mere absence of light but as a positively structured psychological field — generative, demanding, and irreducible.