Yes, we reached camp in the afternoon and napped and woke up again to start moving before midnight of the same day. For these kind of things you want to take advantage of "good" or at least improved snow conditions for ascent which typically occur overnight. On crevassed glaciers such as this one you are safer moving when the snow is firm and better able to support weight, which occurs with lower temps / wind chill. In general it is easier and faster moving uphill on firm snow as opposed to loose or wet, heavy snow which will occur during the day with enough sunlight + warmth.