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.
I’m gmt-4, Sunday morning for me would be the best bet, but how exactly late at night are you referring to? I’m only 9 hours ahead so otherwise that could be extremely early for me
I'd strongly prefer playing on Thursday night (night in gmt+5:30) which will be Thursday afternoon for you. Otherwise we can schedule for some time later in the week?