Question

What is dawn and what is dusk ?​

Answer 1

Answer:

Dawn (on Earth) is the time that marks the beginning of twilight before sunrise. It is recognized by the appearance of indirect sunlight being scattered in Earth's atmosphere, when the centre of the Sun's disc has reached 18° below the observer's horizon.

Dusk occurs at the darkest stage of twilight, or at the very end of astronomical twilight after sunset and just before night. ... The term dusk usually refers to astronomical dusk, or the darkest part of twilight before night begins.

Answer 2

Answer:

Dawn is the time of day when it first begins to get light.

Dusk is the part of day when it is beginning to get dark