This is achieved through the use of a photocell sensor, which detects the level of light in the environment and triggers the light to turn on or off accordingly. The phrase can be used both literally and figuratively, for example, someone can say "I was working on this project from dusk till dawn" meaning they were working on it all night long.ĭusk to dawn lights, also known as "photocell lights" or "dawn to dusk lights," are lights that automatically turn on when the sun sets and turn off when the sun rises. It can also be used to describe something that lasts the entire night, such as a concert or a festival. The phrase is often used to describe activities that happen during this time, such as parties, night shifts, or security surveillance.
The phrase "dusk till dawn(or dusk to dawn, or d2d)" refers to the period of time between sunset and sunrise, that is, the period of darkness when the sun is below the horizon.
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