What is dusk and dawn
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Posted by Anshu Khan 8 years, 1 month ago
- 4 answers
Harish Gayathri 8 years, 1 month ago
Varun Banda 8 years, 1 month ago
Dawn occurs before sunrise, before the top of the Sun reaches the horizon. Astronomical Dawn is the point at which it becomes possible to detect light in the sky, when the sun is 18° below the horizon. Nautical Dawn occurs at 12° below the horizon, when it becomes possible to see the horizon properly and distinguish some objects. Civil Dawn occurs when the sun is 6° below the horizon and there is enough light for activities to take place without artificial lighting.
Dusk occurs after sunset, once the top of the Sun has passed the horizon. As with dawn there is astronomical dusk, nautical dusk and civil dusk, occurring at 18°, 12° and 6° below the horizon respectively.
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Uppmajot Kaur And 8 years, 1 month ago
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