How long after sunset does it get dark?

Answer 1

For today, Septeber 14, 2007, sunset is at 18:49 and darkness is at 19:16, a difference of 27 minutes. (For today, mind you...) See this site for more info, cool graphs and tables.

http://www.gaisma.com/en/location/denver-Colorado.html

Answer 2

30 mins

Actually, the time of twilight after sunset depends on your latitude and the time of year. In far northern latitudes, there is a time in the summer when "twilight" lasts the whole night, whereas near the equator it is fully dark only about 25 minutes after the sun set. In general in temperate latitudes though, it it completely dark about 1 hour after sunset on average.

Answer 3

It typically takes about 30-45 minutes after sunset for the sky to become completely dark, depending on your location and time of year. This period is known as twilight, when the sun is below the horizon but still illuminating the sky.