set-timezone

Sets a new time zone, as specified by time-zone. 

set-timezone [time-zone]
time-zone If no time-zone is specified, or if time-zone is not a recognized time zone, the command-line enters an interactive mode which prompts you through the time zone selection process.

Specify the time zone by entering a time zone name from the tz database.

For example, America/New_York or US/Eastern are both valid settings. Lists of time zone names are available online: http://en.wikipedia.org/wiki/List_of_tz_database_time_zones.

Warning: This command is saved and applied immediately, without need to issue the config-save or config-apply commands. However, the appliance must be rebooted before the new time zone setting takes effect.