I've noticed that for some, it can be a hassle converting event times. For example, if someone says an event is at 5PM EST, is it really their (event participant) responsibility to know that EST is GMT-5? Well, who cares, now! As long as you know the time zone of the event, you can just go here, to the
Time Converter and convert! Hope this helps!

P.S. For those who need it to be more accurate, go to this link
The More Accurate One(Derived from a long-dead post in CZ)