Change Time Zone in e-mail Alert Actions

I created multiple Policies with Health Rules and set alert email sending as an action.

I have two questions:

1. Is there a possibility to change the default email template?

2. How to change the time zone? For some reason the PST time zone is used in email, though we use EST time zone everywhere in the application.

Please, see below the screen shot, I highlighted the time zone used in emails.