Night or nighttime (sp. night-time or night time) is the period of time between the sunset and the sunrise when the Sun is below the horizon.
This occurs after dusk. The opposite of night is day (or "daytime" to distinguish it from "day" as used for a 24-hour period). The start and end points of time of a night vary based on factors such as season, latitude, longitude and timezone.
At any given time, one side of the planet Earth is bathed in light from the Sun (the daytime) and the other side of the Earth is in the shadow caused by the Earth blocking the light of the sun. This shadow is called the umbra. Natural illumination is still provided by a combination of moonlight, planetary light, starlight, diffuse zodiacal light, gegenschein, and airglow. In some circumstances, bioluminescence, aurorae, and lightning can provide some illumination. The glow provided by artificial illumination is sometimes referred to as light pollution because it can interfere with observational astronomy and ecosystems.

View More On

    Recent Content Tagged With night

  1. uscsoldier
  2. slickguns
  3. Joe Link
  4. ScaldingCookies
  5. slickguns
  6. Seared Saba
  7. mrorca
  8. hammerstriker
  9. jmurray192
  10. FatherHolyHoly
  11. DrillerDS
  12. T I M
  13. ZS27
    Thread by: ZS27, Feb 22, 2017, 2 replies, in forum: Handgun Classifieds
  14. bbowl
    Thread by: bbowl, Feb 17, 2017, 0 replies, in forum: Part & Accessory Classifieds
  15. urban4x4
    Thread by: urban4x4, Feb 11, 2017, 5 replies, in forum: Handgun Classifieds
  16. No_Regerts
  17. kalousa
  18. CHLChris
  19. KeepnitReel
  20. JackFrost