I can't remember if I've posted this before but here is a website that computes the sunrise and sunset times based on your lat/long, city/state/country, or airport name. It's great for those who commute in the dark (morning or evening), and would like to know how long they'll be in the dark. I like it because it tells me how many minutes of daylight I'll have for the ride home, based on the "Civil Twilight". The civil twilight means it will be daylight for ~20 minutes longer than actual sunset.
Scroll down in the left column to "Sunset times" and click on it. Then follow the steps (1-5) in the right hand column and click compute.