All dates and times throughout a course are displayed according to the course time zone. Courses automatically default to the account time zone. However, as an instructor, you may be able to change the time zone for your course.
Note: Users can specify a time zone in their User Settings, which does not have any effect on the course time zone. If users have set a specific time zone in their User Settings, all course dates and times will display in their local time, but if they hover over the date and time, they can also see the course date and time.
Open Course Settings
In Course Navigation, click the Settings link.
Open Course Details
Click the Course Details tab.
Set Course Time Zone
In the Time Zone drop-down menu, select a new time zone for your course.