Dawn
Daybreak, Beginning
noun
あけぼの
Dawn is in the morning when the top of the sun is below the horizon but there's some light in the atmosphere.
Sunrise is in the morning when the top of the sun has crossed the horizon.
Sunset is in the evening when the top of the sun is still above the horizon.
Dusk is in the evening when the top of the sun is below the horizon but there's still some light in the atmosphere.