After the edits to the question:
This is not an issue you should raise publicly. Since I presume the meeting has ended by now (given that this question was asked 17 hours ago) and you made it through that meeting, the next thing you should do should be to speak with your manager, in private, and discuss this issue with your manager, in private. Points to raise include:
- You are a remote worker, and the only remote worker on the team, which is why you need special accomodations
- You live in a different time zone such that regular team meetings occur in the middle of the night for you
- You are not comfortable attending meetings in the middle of the night and would rather not attend such meetings if your presence is not required
- If your presence is required, then you will not be able to "look your best" for these meetings, and those attending should be aware of that
- If your presence is required and you are expected to look your best, then you would greatly prefer to not have to turn on your camera.
Depending on the company, your manager will probably be amenable to one or more of these conditions.
Of course, this also depends on your own personality: If your manager said, "we're all friends here, nobody cares if you have bedhead, just turn on your cam", would that be ok with you? In my opinion, that sounds like a reasonable compromise: it's OK to not look your best, we won't hold that against you, but just turn on your camera so we can see you're actually there and paying attention (and not having the meeting on in the background while you go back to sleep, for example). If this would not be OK for you, and you feel like you should either have your camera off or clean yourself up, that's a "you" problem, and it's therefore up to you to fix it. That might mean something like waking up 30 mins before your meeting to get showered and dressed before the meeting, if that makes you feel better.
Of course, depending on the company, your manager may also not be OK with any of these things and say that you have to turn on your camera and "look professional", just like everyone else (irrespective of the fact that your time zone change puts you in special circumstances). In which case, it's up to you to make a decision if you want to work for a company who has these sorts of standards; it may be worth changing companies to work for someone more local with less of a time difference.