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.
For the rands mayhem tour, I am UTC -4 and can be available 19:30-23:00 any day this week. If that time doesn't work for you, I may be able to play earlier, but I'd need to know a day or two in advance.