I would like to setup a notification policy such that P3 or lower will be delivered at 9 am on a weekday, for the on-call engineer.
However in the policy settings, I do not see any awareness of timezone, or even a clear indication of which timezone is being used:

Based on this article and this question, it looks like this is impossible.
Questions
1. am I correct?
2. if so, can you please suggest a reasonable workaround?