Sunrise & Sunset

The Sun usually rises and sets each day in a given location, but the circumstances and times of sunrise and sunset can be quite complicated. Explore the variations in sunrise and sunset times using Wolfram|Alpha. In polar regions, the Sun may not rise or set for months, bringing on a midnight‐Sun scenario or polar night. Since sunrise and sunset are determined visually, the actual times can vary depending on local environmental factors, such as atmospheric pressure. In addition, as the Earth orbits the Sun and is tilted on its axis, the times of both events vary throughout the year.