You can use the time zone option to choose your Oracle BI EE account's preferred time zone. This option allows system users who do not reside in the same physical location to override the default time zone that was set by the system administrator. For example, suppose the Oracle BI server that sends you alerts resides in the US Pacific time zone, but your work location is in the US Central time zone. After you set the Central time zone as your preferred time zone setting, the delivered time on your alerts appears in Central time. Your account's time zone automatically apply to any items that you create, modify, run, receive, and print.
The date and time columns included in reports appear according to the report designers specifications. The report designer can force a specific time zone to appear in the column, or allow the users default time zone to appear in the column. A clock icon appears in the column heading, and when you mouse over this icon, the name of the time zone used in the column is displayed.
For more information on how the administrator sets the Oracle BI Presentation Server's time zone, see the Oracle Business Intelligence Presentation Services Administration Guide.