As the days darken earlier in the northern hemisphere, we can relate to Shackleton's words in South and marvel at the extraordinary cheerfulness of the Endurance crew...
"A fine aurora in the evening was dimmed by the full moon, which had risen on April 27 and would not set again until May 6. The disappearance of the sun is apt to be a depressing event in the polar regions, where the long months of darkness involve mental as well as physical strain. But the Endurance’s company refused to abandon their customary cheerfulness, and a concert in the evening made the Ritz a scene of noisy merriment, in strange contrast with the cold, silent world that lay outside.