Question

What is the period of dim light before sunrise called?

Answer 1

Twilight is the name given to the period between dawn and sunrise, or between sunset and dusk, when light is still visible in the sky due to sunlight scattering off the atmosphere. It can also be separated in astronomical, nautical and civil sections by how far below the horizon the Sun is.

Answer 2

Twilight is known as the time which appears before the sunrise and the sunset where the light is extremely low and we can see the stars and the moon. In during this phase the sky appears to be violet in colour.

The Twilight in the morning is known as Dusk while the Twilight phase in the evening is known as Dawn. Here the sun is at angle of 18 degree from the equator.