The main status screen shows the current time as seen by the control center. Look to the right side, just below the Administration button. it should read mm/dd/yy hh:mm to mm/dd/yy hh:mm. The second time is the current time of the control center.
On the Admin, Config, DNS/Time tab:
1. Ensure that the Time Zone is configured for your time.
2. All hardware clocks, drift. Ensure that you have correctly configued NTP server. You will need to ensure that your time source is reachable on UDP port 123. You may have an internal NTP source, or you could use an internet based one such as http://www.pool.ntp.org/zone/@ . For example, I use us.pool.ntp.org since I'm in the USA.
3. Set the correct time manually. If current clock is far for correct, NTP will not converge to the correct time.
These changes will NOT require an appliance reboot.