You should choose the timezone you'll be in the majority of the time. If traveling way outside it, you may have group office hours sessions at a wacky time. It

You should choose the timezone you'll be in the majority of the time. If traveling way outside it, you may have group office hours sessions at a wacky time. It won't impact the lectures since you can just watch on your own schedule, or most engagement with peers since it'll be a forum-like experience.