The term "twilight zone" refers to the period of time just before sunrise and just after sunset when the light is dim and the sky takes on a unique quality. This time is characterized by soft, diffused light, making it ideal for photography and outdoor activities. It is often associated with a sense of calm and transition between day and night. In popular culture, the phrase is also linked to the television series The Twilight Zone, created by Rod Serling. The show, which aired from 1959 to 1964, featured science fiction and fantasy stories that often explored moral and philosophical themes, leaving viewers with thought-provoking questions.