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  1. Astronomical dawn is the time when the center of the Sun is at 18 degrees below the horizon. Astronomical dusk is the instant when the center of the Sun is at 18 degrees below the horizon. During astronomical twilight, most celestial objects can be observed in the sky.

  2. We all know that sunrise or dawn is when the sun comes up, and sunset or dusk is when it goes down. But what if we need a more accurate time to refer to?

  3. 9 Σεπ 2022 · Dusk and dawn occur when the Sun’s center is at the exact point below the horizon; twilight occurs between these points. For example, when the Sun is exactly 18° below the horizon — it’s called astronomical dusk (or dawn), but the interval from 12° to 18° is astronomical twilight.

  4. Dawn and dusk are two distinct periods of the day that hold a special place in our hearts. They mark the transition between night and day, offering unique experiences and captivating beauty. While dawn represents the beginning of a new day, dusk signifies the end of daylight.

  5. 6 Μαρ 2024 · Dusk and Dawn are periods of twilight transitions between two halves of the day. As seen in the table chart, they are as equally the same as different. Their main difference is that dawn appears before sunrise and dusk after the Sun has set. Both are beautiful skies to behold.

  6. As with dawn, scientists define dusk as specific moments in time based on the solar elevation angle, which is the position of the Sun in relation to the horizon. There are 3 stages of dusk, each marking the end of 1 of the 3 phases of evening twilight:

  7. The twilight phases in the morning are often called dawn, while the twilight phases in the evening are referred to as dusk. However, unlike the term twilight, which describes a time span, the terms dawn and dusk refer to moments during the transitions between day and night.

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