Use this dialog box to view or change your system's date, time, and effective time zone. If you make a change to your time zone, you must reboot your system for the change to take effect.

Note: If the Network Time Protocol (NTP) is detected on your system, you cannot change your system's date, time, or time zone. If NTP is not detected and you manually change the date, time, or time zone, you can adversely affect the performance of NTP.