Hello Alex,
When setting the expiration date for users in the PST timezone the date gets set to a day in the future in AD running in EST. For users in EST this works as expected, changing the local time on the PST computer also makes this work as intended.
As we understand, it is about the Account Expires property. It is being set by AD and has a lot of peculiarities.
Is there a way to enforce a single timezone for the Web UI?
Unfortunately, there is no such possibility. However, thank you for the suggestion. We forwarded it to the corresponding department for consideration.