Maritime dawn is a period at which a sun is Dozen degrees in the image below the horizon in the morning. Marine dawn is defined when that period at which there exists good plenty sunshine for objects to exist as distiguishable.

Astronomic dawn is a period at which a sun is Eighteen degrees beneath the horizon in the morning. Astronomic dawn is that point eventually at which a sun starts lightening a sky. Before this instance, a sky is entirely dark.

Dawn should non become confused by using sunrise, which is a moment when a leading edge of the Sun itself appears above the horizon.

Within American folkloristic tradition it is believed that evil spirits, demons, trolls, and possibly Satan are obliged to disappear at dawn, for being it animals of Darkness they hate light, especially that of the Sun. Pre-Christian Celts also shared this belief.

Traditionally dawn is the point at which the whiten thread may be distinguished from either the nigrify thread.