Three types of twilight—civil, nautical, and astronomical—are defined mathematically based on the sun's angular distance below the horizon (6°, 12°, and 18°, respectively), ...

Nautical twilight is a deep dusk — dim bluish sky, bright planets visible. In civil twilight, the sky is light all over though the sun is not visible.

“Nautical twilight is when we begin to see the brightest planets and the stars start to come out,” Epstein said. It’s also a cautious time for animals. “I call this coyote time,” Epstein said. “You ...

Nautical twilight, evening: Reverse of the morning progression. The brightest planets become visible, all but the most vibrant colors are muted to shades of gray.

Nautical Twilight is achieved when the geometric center of the sun is 12 degrees below the horizon. This term dates back to sailors using the stars for directions, ...

Nautical twilight, evening: The brightest planets become visible, all but the most vibrant colors are muted to shades of gray. Trail running is dicey without a headlamp, ...

Nautical twilight is defined as when the center of the sun is geometrically between 6 degrees and12 degrees below the horizon — the sun reaches 12 degrees about 60 to 80 minutes before sunrise ...

Nautical Twilight is when the sun is 6-12 degrees below the horizon. Astronomical Twilight is when the sun is 12-18 degrees below the horizon. Here is what it means to us!

The next phase is nautical twilight, when the sun is between six and 12 degrees below the horizon. The sky may be a deep purple, and stars begin to appear.

During nautical twilight, the center of the sun's disk is between 6 and 12 degrees below the horizon, and the sky turns dark blue. In clear weather conditions, the horizon is faintly visible ...