The phrase describes a setting that shifts from a cloudy afternoon to a stark, clear night, emphasizing an absence of the moon. This contrast might symbolize a transition from obscurity to clarity or highlight a sense of foreboding. The mention of the backdrop adds to the atmosphere, creating a stark visual that enhances the emotional impact of the moment.

This imagery resonates deeply within the narrative of "American Psycho" by Bret Easton Ellis. The transition in the sky mirrors the complex and often dark themes explored in the book, suggesting an underlying tension. The moonless sky creates an eerie calm, amplifying the sense of isolation and the character's internal struggles, perfectly capturing the unsettling tone of the story.