This photo was taken at 11:46 p.m. local time on November 13. This is approximately the lowest point of the Sun’s path in our sky. It will set locally behind the Kukri Hills for periods later in the evening. As the season progresses the sun will not set locally.
Unless the sky is cloudy, sleeping temperature in our tents is comfortable because we get solar gain all night long.
(Update, November 17, 2014: I looked up solar noon for the location of F6 and found that on the 13th it fell at 12:51 p.m. Solar midnight would be at about 00:51 in the morning of the 14th, or one hour five minutes after I took this photo.)