Not sure if the title of my question was accurate so sorry if it's misleading, here goes.

I am doing some work with that involves timezones and i just want to make sure i get this right... if i want something to start at 03:00:00 my time and my timezone offset is -5 all i need to do is add 5 to 03:00:00 giving me 08:00:00 and that is the UTC time?