l am emailing you about the team meeting at 4 pm on Tuesday 13 (Seattle time), which is 8 am on Wednesday 14 (Tokyo time).
Yes. The date of the meeting is already fixed and both the Tokyo side and the Seattle side are aware of that. So, you don’t need to write down the detailed date and hours of the meeting.
Instead I would recommend including the specific Seattle date into the subject of the email as agenda for the meeting Tuesday the 13th.
The sentence is fine, but it may give the impression that there are no additional items. And some people would hesitate to come up with their proposals like this. So I would recommend instead an interrogative sentence like "Is there anything you want to add?"