This is happening right as my school starts up again, so my time should be a little bit more constrained.

However, 8:30-11:00 pm JST (UTC+9) should work just fine for any day that isn't sunday. For sunday, I'm free until 3pm JST, and again after 9:30 JST...or so. Monday I have a bunch of free time again, I'm going to be free then until maybe 3pm JST time and then again from 8:30pm on.

EDIT: Saturday's going to operate on the same schedule as school days, so once again 8:30pm local time or later is a good start time.