Keeping Time Accurate

I have a Mac-Mini sitting in my basement dedicated to running Indigo.
I have noticed that the Mac-Mini loses time ( for example, about 30 minutes in the last year) and the time reported by Indigo becomes inaccurate.
In Apple's Settings-Date & Time, Set date and time automatically is checked.

I sat in front of the Apple today for the first time in about six months. I noticed the time reported by Apple (and indigo) was 30 minutes slow. I opened the Settings-Time & Date window and unchecked then rechecked the "automatically" checkbox. The time corrected itself.

My guess is that the Apple is losing time because there is no event to periodically cause it to update the time. It is relying on its internal clock, which is slightly slow.

Is this correct? (or close)

Is there a way to force the Mac-Mini to update time rather than having to physically go to the Settings-Time & Date window?

Thanks,
Barry.

Can't say I know much at all about how your Mini gets its time updates. But in the Time/Date control panel did you check to be sure there is an NTP server in the field next to the automatic update check box?

Thanks, yep.

Apple Americas/U.S. (time.apple.com)