Daylights

noun

1. The light from the Sun, as opposed to that from any other source.
2. A light source that simulates daylight.
3. (photometry) The intensity distribution of light over the visible spectrum generated by the Sun under various conditions or by other light sources intended to simulate natural daylight.
4. The period of time between sunrise and sunset.

   "We should get home while it's still daylight."

5. Daybreak.

   "We had only two hours to work before daylight."