Dusk!

Dusk is the time of day that occurs after sunset and before night. It is characterized by the fading light of the sun and the onset of twilight. Dusk is often associated with a gradual decrease in natural light, leading to the darkness of night.

Phases of Dusk

Dusk can be divided into three distinct phases:

• Civil dusk: This phase occurs when the sun is 6 degrees below the horizon. During civil dusk, there is still enough natural light for most outdoor activities without the need for artificial lighting. It marks the end of civil twilight.
• Nautical dusk: This phase occurs when the sun is 12 degrees below the horizon. During nautical dusk, the horizon is no longer visible at sea, making it difficult for sailors to navigate using the horizon. It marks the end of nautical twilight.
• Astronomical dusk: This phase occurs when the sun is 18 degrees below the horizon. During astronomical dusk, the sky is dark enough for astronomers to observe celestial objects without interference from sunlight. It marks the end of astronomical twilight.

Significance of Dusk

Dusk has various cultural, religious, and practical significances:

• In many cultures, dusk is a time for reflection and relaxation after the day's activities.
• In Islam, dusk marks the time for the Maghrib prayer.
• In Judaism, dusk signifies the end of the day and the beginning of the next day according to the Hebrew calendar.

Related Phenomena

• Twilight
• Sunset
• Night
• Golden hour (photography)
• Blue hour

Related Pages

• Twilight
• Sunset
• Night
• Golden hour (photography)
• Blue hour