After a little more than six months, the sun will finally set at Amundsen-Scott South Pole Station at 23:42 UTC today. It rises again at 07:52 UTC on September 21st.
The station has decent weather today: it's a brisk -60°C with a gentle breeze causing a wind chill of -84°C. To understand what that means, just keep in mind dry ice forms at -77.5°C.
Actually, the place is really
cool fascinating; I recommend starting with the Wikipedia entry and exploring from there. I can't fathom over-wintering there, but I'd take any opportunity to visit in December or January.