Subantarctic Sunrise

Subantarctic Sunrise - Phase One XF, IQ3 100, 750mm, f/6.3, 1/250s, ISO 100.

The timestamp says that I photographed this sunrise color at 3:30 am. I was wondering why I was up so early, then remembered that it was the day of our Shackleton walk which required departure from the boat before 6 am (and I like having time to prepare before a landing).