While I enjoy advent of code I always have been happy to live on the west coast. I wonder how many people on the east coast don't participate because they'd have to stay up til midnight if they want to score.
I'm probably going to do this either in a language I'm learning as I go, or in something like Erlang which, whilst great to get correct, will not iterate as fast (for me at least) as the Ruby solution I could quickly and easily write.