I recently learned about the different phases of twilight. This photo was taken during what is called nautical twilight, when the sun is between 6-12 degrees below the horizon, or about 30 minutes to an hour after sunset. You can still see some color off in the distance, which can generate some beautiful photos. Especially when the moon is so bright!
1/6 sec., F4.0, ISO 800
18-55mm lens (18 mm), no flash fired and no tripod used