What is the difference between civil twilight, astronomical twilight, and nautical twilight?
In: 47
Sunset
**Civil twilight** – sun is setting, artificial light is not needed
Sun falls below horizon
**Nautical twilight** – sun has set, but it is possible to navigate by the shape of the horizon
Horizon is no longer visible
**Astronomical twilight** – Bright stars and planets become visible
Sky is fully dark, all stars can be observed
And then in reverse in the morning.
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