1) Open System Settings.

2) Under the General tab, choose Date & Time.

3) Ensure that the option "Set time and date automatically" is enabled (slid to the right).

4) Use Touch ID to unlock the setting.

Alternatively, you may type the username and password of an account with administrative privileges on your Mac. Then, click Unlock.

5) Click Set.

6) Type your preferred server name and click Done.

NOTE: NTP traffic is blocked at TTU's Internet firewall. Therefore, if your Mac is regularly connected to a TTU network, you must use the server ntp.ttu.edu. If your Mac is not connected to a TTU network, set a different time server, such as time.apple.com or time.nist.gov.

Outcome

On a regular basis, your Mac automatically updates its date and time from the server that you specified.