Happy Saint Paddy's to you, if you're a believer. 
You're not going to be short of places to celebrate, but make Belfast in OSGrid part of your patriotic pub crawl today. They will have live music starting at 1pm SLT, (that's this evening from 9, for us in Europe) and the lineup includes Joaquin Gustav, Truelie Telling, and some DJ's playing 'rare Irish Vinyl' to finish up with.
All this, free Guiness - and the Titanic's 100th birthday - can you afford not to be there?