Dawn vs. Sunup — What's the Difference?

Dawn 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.

The time of sunrise.

The time each morning at which daylight first begins.

(US) The time of day when the sun appears above the eastern horizon.

A first appearance; a beginning

(US) The change in color of the sky at sunup.

To begin to become light in the morning.

Sunrise.

To begin to appear or develop; emerge.

The first light of day;

To begin to be perceived or understood

(intransitive) To begin to brighten with daylight.

(intransitive) To start to appear or be realized.

(intransitive) To begin to give promise; to begin to appear or to expand.

(uncountable) The morning twilight period immediately before sunrise.

(countable) The rising of the sun.

(uncountable) The time when the sun rises.

(uncountable) The earliest phase of something.

To begin to grow light in the morning; to grow light; to break, or begin to appear; as, the day dawns; the morning dawns.

To began to give promise; to begin to appear or to expand.

The break of day; the first appearance of light in the morning; show of approaching sunrise.

First opening or expansion; first appearance; beginning; rise.

The first light of day;

The earliest period;

An opening time period;

Become clear or enter one's consciousness or emotions;

Appear or develop;

Become light;