Twilight occurs when Earth's upper atmosphere scatters and refracts sunlight which illuminates the lower atmosphere. A number of atmospheric phenomenaand colors can … See more

There are three types of twilight: 1. Civil twilight 2. Nautical twilight 3. Astronomical twilight Astronomers define the three stages of twilight on the basis of how far the Sun is belo… See more

Civil twilightoccurs when the Sun is less than 6 degrees below the horizon. In the morning, civil twilight begins when the Sun is 6 degrees below the horizon and ends at sunrise. In t… See more