What is the last night of the world in the illustrated man about?

In "The Last Night of the World," a short story from Ray Bradbury's "The Illustrated Man," a couple discusses the impending end of the world as they experience an eerie calmness. They learn that everyone has received the same dream about the world’s end, leading to a quiet acceptance of their fate. The story explores themes of human connection, love, and the inevitability of death, as the couple reflects on their lives and prepares for the final moments together. Ultimately, it captures a profound sense of peace in the face of extinction.