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.
GMT -3 here. I'm free around 14:00-16:00 or 19:00-20:00h, if you want to play earlier, Saturday (stour time) is p good for me, otherwise weekdays are fine (except Wednesday).