What Time is Dusk?


astronomical dusk

Astronomical dusk is the darkest stage of twilight. It occurs at the end of the twilight period. This period lasts from just after sunset until just before nightfall. The planets’ movements change the amount of light that they reflect. The Sun’s position in the sky also influences the length of astronomical dusk.

Astronomical twilight occurs when the Sun is 12 to 18 degrees below the horizon. The resulting light is very faint and is similar to the night. Astronomical twilight is ideal for observing the night sky and for astrophotography. During this time, astronomers can see fainter stars and planets than usual, and colors are barely discernible.

The shortest time for astronomical twilight is 90 minutes after sunset. However, astronomical twilight can last an hour or longer in the summer.

Civil twilight

At dusk, the light is weaker than it was during the day, and it is no longer necessary to use artificial lighting. This period is known as civil twilight, lasting from a few hours after sunset until the Sun is a few degrees below the horizon. This is the perfect time to take photographs of landscapes and urban areas.

The first hour of twilight is known as the golden hour. This period is best for taking pictures of landscapes and portraits. It has a golden glow, making it one of the photographers’ most desirable natural light periods. The duration of the golden hour varies depending on the time of day and location.

Nautical twilight

Nautical twilight is the time of day when the Sun is between six degrees and twelve degrees below the horizon. The light at this time is barely visible and only provides enough illumination to carry out basic outdoor activities. During this period, sailors would take navigational observations.

Morning nautical twilight is from 5:40 to 6:10 a.m. It is followed by evening twilight from 5:30 to 6 p.m. It occurs when the Sun is at its lowest point. In the UK, civil twilight starts at sunset.

The duration of nautical twilight varies by region. In the northern hemisphere, it begins at six degrees below the horizon and ends at sunset. Nautical twilight duration depends on weather conditions and the number of hefty particles suspended in the air. During nautical twilight, the sky and horizon line is darker and suitable for photographing.


Variations on Dawn and Dusk by Dan Beachy-Quick is a fascinating book of poetry that follows the Sun in Marfa, Texas. The cover features Robert Irwin’s famous painting, “Windows of light in a dark room.” This book of poetry explores the human experience in the natural world.

The earliest time to view the dawn is around six o’clock. The roosters croon, and the birds chirp as the trees and people begin to awaken. The dawn symbolizes a fresh start and a bright future. It is also a time for planning the day’s plans and activities.

Twilight is referred to by different terms in the military, navy, and aviation industries. However, the commoner often confuses dawn and dusk. Nevertheless, dusk refers to the transition period between day and night. The Sun’s disc appears over the eastern horizon and disappears beneath the western horizon. Dusk and dawn are similar, but the two have subtle differences.


The time when the Sun sets is called the sunset, a natural phenomenon caused by the Earth’s rotation. The Sun sets to the west on the spring and autumn equinoxes and the southwest in the winter. The distance to the equator is also essential for determining the exact time of day.

For New York City, the sunrise and sunset time are 06:45 am and 06:53 pm, respectively. These times are based on ideal weather and level ground and may vary slightly depending on your location.

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