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2. Twilight - Wikipedia

   en.wikipedia.org/wiki/Twilight

   [1] [failed verification] At nautical dawn and nautical dusk, the human eye finds it difficult, if not impossible, to discern traces of illumination near the sunset or sunrise point of the horizon (first light after nautical dawn but before civil dawn and nightfall after civil dusk but before nautical dusk). [citation needed]

3. Mesopic vision - Wikipedia

   en.wikipedia.org/wiki/Mesopic_vision

   Mesopic vision, sometimes also called twilight vision, is a combination of photopic and scotopic vision under low-light (but not necessarily dark) conditions. [1] Mesopic levels range approximately from 0.01 to 3.0 cd/m 2 in luminance. Most nighttime outdoor and street lighting conditions are in the mesopic range. [2]

4. Dusk - Wikipedia

   en.wikipedia.org/wiki/Dusk

   The sky has many colors at this time, such as orange and red. Beyond this point artificial light may be needed to carry out outdoor activities, depending on atmospheric conditions and location. At nautical dusk, the Sun moves to 12° below the horizon in the evening. It marks the end of nautical twilight, which begins at civil dusk.

5. The Best Drive-In Theaters in America - AOL

   www.aol.com/best-drive-theaters-america...

   Here are some of America's best outdoor theaters still open. ... In the past, the theater has hosted multi-film dusk-to-dawn movie events. There is also a children's playground and an extensive ...

6. Your Herb Garden Needs Special Care in Winter—These Expert ...

   www.aol.com/herb-garden-needs-special-care...

   "Use a timer to automatically turn lights on and off at specific intervals prior to dawn and after dusk," Thewlis says. "A continuous light cycle of 18 hours promotes vigorous vegetative growth ...

7. Twilight switch - Wikipedia

   en.wikipedia.org/wiki/Twilight_switch

   Also, keep in mind that ignition is based solely on the amount of natural light present and not on the height of the sun, so "unwanted ignition" may occur, for example in the presence of compact clouds associated with a significant drop in ambient light on the sensor (e.g., when there is a storm). To avoid this, twilight switches can be ...