Twilight is the illumination of the lower atmosphere when the Sun is not directly visible because it is below the horizon. Twilight is produced by sunlight scattering in the upper atmosphere, illuminating the lower atmosphere so that Earth's surface is neither completely lit nor completely dark.

What does it mean when someone is twilight?

the period in the morning or, more commonly, in the evening during which this light prevails. a terminal period, especially after full development, success, etc.: the twilight of his life. a state of uncertainty, vagueness, or gloom.

Is twilight a night or morning?

You can define twilight simply as the time of day between daylight and darkness, whether that's after sunset, or before sunrise. It's a time when the light from the sky appears diffused and often pinkish. The sun is below the horizon, but its rays are scattered by Earth's atmosphere to create the colors of twilight.