The Gusty Wind Teased Poem by Suzette Richards

Civil twilight: the Sun is less than 6 degrees below the horizon. This is the brightest type of twilight and allows most outdoor activities to be done without artificial lighting. Nautical twilight: the Sun is between 6 and 12 degrees below the horizon. This is the type of twilight when sailors can use the horizon and the stars for navigation. Astronomical twilight: the Sun is between 12 and 18 degrees below the horizon. This is the darkest type of twilight and the best time for observing faint stars and galaxies.