Sunrise is 0600, Sunset is 1800 - How Long is Twilight?

Answer 1

It averages about forty minutes at both sunrise and sunset.

Answer 2

The lenght of twilight depends on latitude, and time of year. Twilight is the longest at the poles (except when there is 24h daylight or when it never becomes completely dark during the summer in which case then the twilight to little to none), and can last several hours. Twilight is the shortest at the equator, where twilight can be as short as 20 minutes. In the mid-latitudes, twilight is the shortest at the equinoxes, slightly longer around the winter solstice, and much longer around the summer solstice.

Here are some websites:
http://www.enginova.com/twilight.htm
http://www.mangobay.cc/users/moonfinder/aug-98.htm
http://www.oceannavigator.com/article.php?a=1289

Answer 3

Insufficient information---the length of twilight also depends on your latitude. The sunrise and sunset times you cite could happen near equinox (not exactly at equinox because of refraction) at all temperate latitudes, but the twilight will be much longer in the arctic than on the equator. Also, there is "civil" twilight and "astronomical" twilight. Astronomical twilight is always longer.

Answer 4

6 m inutes and 34 seconds