Dawn is the time at which the sun’s light starts to brighten a place even though the sun cannot be seen at that instance. On the other hand, sunset is the moment when the sun cannot be seen, and dusk is the time in which the place gets dark. It occurs at the end of the day. Moreover, sunset is the period when the sun is not visible in the sky. The twilight is supposed to end at dusk as the light is taken over by darkness. As a result of this, dusk is when the light is no more and the night falls. Also dusk occurs just once each day.
It refers to two different moments. It is the time of day between sunrise and dawn, and also the time between dusk and sunset. The sunlight spreads in the upper atmosphere and lights the Earth’s lower atmosphere during this phase. This means that Earth is never completely dark or fully lit at any point of time. Painters and photographers love this moment and even early morning people love to see the sunrise. In this instance, the sun is below the horizon and cannot be seen. A natural light comes from the sun and spreads on the Earth.