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dawn

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Also known as daybreak

thumb|right|Late summer dawn over the Mojave Desert, [[California]] thumb|Dawn is sometimes considered the beginning of morning twilight, the period of twilight, or the time of sunrise. 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. This morning twilight period will last until sunrise (when the Sun's upper limb breaks the horizon), when direct sunlight outshines the diffused light.

AI overview

Dawn is the period of twilight that occurs before sunrise, when scattered sunlight begins to illuminate Earth's atmosphere even though the Sun is still below the horizon. It matters because it marks the transition from night to day and provides a natural division of time that has shaped human activity, navigation, and our understanding of daily cycles.

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Commons category: Dawn

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~9 min read

Article

15 sections

Contents

Etymology
Types of dawn
Astronomical dawn
Nautical dawn
Civil dawn
Effects of latitude
The Equator
Polar regions
Example
Mythology and religion
In art
In literature
See also
References
External links

thumb|right|Late summer dawn over the Mojave Desert, [[California]] thumb|Dawn is sometimes considered the beginning of morning twilight, the period of twilight, or the time of sunrise. 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. This morning twilight period will last until sunrise (when the Sun's upper limb breaks the horizon), when direct sunlight outshines the diffused light.

thumb|Civil, nautical, and astronomical dawn, when defined as the beginning time of the corresponding twilight

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Categories

Dawn Earth phenomena Parts of a day