From the System Administration tool you can change the timezone setting used by the JobServer scheduling engine and all JobServer web servers. By default, JobServer will use the timezone used by the host machine and configured by Java. You may change the timezone to any of the ones that are shown in the list. The new timezone setting will not take effect unless JobServer is in "Idle" state.
You may also choose a custom GMT timezone such as "GMT-08:00" or "GMT+08:00", for example. If the given timezone you enter cannot be understood, the timezone will be set to the Greenwich Mean Time zone.