Default Time Zone
You can specify the time zone that your application uses to display date and time fields during your session.
To set a default time zone
From the application-level menu, choose Tools, then User Preferences.
The User Preferences screen appears.
Navigate to the Profile view.
The Profile form appears.
In the Time Zone field, click the select button.
The Pick Time Zone dialog box appears.
Select the time zone, and click OK.