http://en.wikipedia.org/wiki/ISO_8601
- Display the configuration editor in the system menu by following these steps:
Click on System → Preferences → Main Menu
Enable: Applications → System Tools → Configuration Editor (gconf-editor) - Now open the Configuration Editor (gconf-editor) and do the following:
- Navigate to / → apps → panel → applets → clock_screen0 → prefs
and set the value ofcustom_format
to%Y-%m-%d %H:%M:%S
. (note: this is the php strftime() format.) - Under "format" in the same location change 24-hour to
custom
- Navigate to / → apps → panel → applets → clock_screen0 → prefs