For Friday the 23rd of February, 2018
Location:Phippsburg, Maine, USA

Astronomical Twilight Begins: 04:48:44
Nautical Twilight Begins: 05:21:58
Civil Twilight Begins: 05:55:18
Sunrise: 06:24:13
Sunset: 17:20:55
Civil Twilight Ends: 17:49:50
Nautical Twilight Ends: 18:23:10
Astronomical Twilight Ends: 18:56:24
Length of the Day: 10:56 hours

Wikipedia Twilight Article

Wikipedia Twilight Images

The Colors of Twilight and Sunset, Stephen F. Corfidi NOAA/NWS Storm Prediction Center