Information
Correct date and time settings are required for authentication protocols, file creation, modification dates and log entries.
Note: If your organization has internal time servers, enter them here. Enterprise mobile devices may need to use a mix of internal and external time servers. If multiple servers are required use the Date & Time System Preference with each server separated by a space.
Rationale:
Kerberos may not operate correctly if the time on the Mac is off by more than 5 minutes. This in turn can affect Apple's single sign-on feature, Active Directory logons, and other features.
Solution
Perform the following to implement the prescribed state:
1. Open System Preferences
2. Select Date & Time
3. Select Set date and time automatically
Alternatively run the following commands:
sudo systemsetup -setnetworktimeserver
sudo systemsetup setusingnetworktime on