I figured I'd list the current timezone offsets so people with parties and other events can make their posters appropriately.
See, the US had the clever idea of starting their daylight savings time way earlier than the EU, so it's bound to throw a few people off.
I'm only including info about US and EU timezones. If anyone knows what's going on in Asia and Oceania, please post it. 
Northern America
Shorthand name Full name Abbreviation Offset
Pacific Pacific Daylight Time PDT GMT-7
Mountain Mountain Daylight Time MDT GMT-6
Central Central Daylight Time CDT GMT-5
Eastern Eastern Daylight Time EDT GMT-4
Europe
Full name Abbreviation Offset
UK time BST GMT+1
Western European Time WEST GMT+1
Central European Time CEST GMT+2
Eastern European Time EEST GMT+3
All these regions are currently obeying daylight savings time. So a live event taking place at 5pm Pacific (PDT) will happen at 1am the following day in the UK (BST). These offsets are valid until the 26th of October.
Edit: I hate this forum. Wouldn't let me use proper tables.