I'm on the third driller shift, so I start work at 10:30, have a lunch break at around 1:30, and get off work at 7:30. That midnight to 1:30 meal is called "midrats", for "midnight rations".
Tonight I got my lunch and sat down at a table with some other IceCube people and 3 skiers. It turned out that the skiers were all descendants of men from Ernest Shackleton's and they had just arrived after retracing Shackleton's steps, though where Shackleton turned around, they obviously kept going! All three men were very friendly and excited about having finished their 65 day journey. They're writing a book and the BBC will also be doing a program on their journey.
You can read more about them at the Shackleton Centenary Expedition website.