clock timezone zone hours-offset [minutes-offset]
Here are explanations for each parameter: zone This is the name of the time zone to be displayed when standard time is in effect.
hours-offset This is the hours difference from UTC.
minutes-offset This is the (optional) minutes difference from UTC.
The system keeps the time internally in UTC and specifies a value for zone. The system displays the time for that zone. For more information you may wish to refer to: clock timezone