Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
To give you a generalization of my schedule: I work 6am-2pm PST (GMT-7) Monday-Thursday and will usually stay about 15 to 30 minutes later. On Fridays I work from 6am-10am PST (GMT-7). I have other stuff going on Mondays so I prefer to not schedule on Mondays period. Thursdays I usually go out beginning at 3:30pm PST (GMT-7) until about 7pm PST (GMT-7).