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Brightest form of twilight
- Civil twilight is the brightest form of twilight. There is enough natural sunlight during this period that artificial light may not be required to carry out outdoor activities. Only the brightest celestial objects can be observed by the naked eye during this time.
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Civil twilight is the brightest of the twilight phases. How is it defined and when does it start and end? What are civil dawn and civil dusk?
Midtown Manhattan during civil twilight, demonstrating blue hour. Civil twilight is the time when the geometric center of the Sun is between the horizon and 6° below the horizon. Civil twilight is the period when enough natural light remains that artificial light in towns and cities is not needed.
Civil Twilight: Begins in the morning, or ends in the evening, when the geometric center of the sun is 6 degrees below the horizon. Therefore morning civil twilight begins when the geometric center of the sun is 6 degrees below the horizon, and ends at sunrise.
Feb 1, 2022 · Civil twilight is the lightest (or least dark) of the three—when the sun is between 0 and 6 degrees below the horizon. In general, the term twilight most commonly refers to the period after sunset before total darkness, but it can also refer to the period before sunrise.
Feb 27, 2024 · The three twilight types are civil, nautical and astronomical twilight. Civil twilight is the brightest phase of twilight, while astronomical twilight is the darkest, and occurs just before or after night.
Jul 5, 2023 · Most of us think of twilight as a single period of transition from bright day to deep night, but there are actually three twilights: civil, nautical, and astronomical. Each is defined by how far...
