My old Mac Mini keeps resetting to earlier date and time than now. It won't keep the current time unless I set it in preferences, and start it up again. Then it looses the current settings the next time it starts up.
You may also try manually setting time and not rely on automatic. However
the issue may be caused by old 'clock battery' as it may now be w/o power.
Those batteries (button cell) can last several years and seem to be OK until
such time as actual power failure; then the memory sustained by that cell
is lost. As are other remembered clock/system settings, usually are then.
Sounds like the Time Zone is floating in the Date & Time Preference.
Go to: Apple > System Preferences > Date & Time > select the Time Zone tab and see if "Set time zone automatically using current location" is checked or un-checked. You may need to un-lock the preference panel in-order to change it.
Back up one tab to Date & Time and see if "Set date and time automatically" is checked.
Thanks den.thed, but when I mentioned an "earlier time" set back on the computer I was referring to a year change of over 15 years back. (The age of the computer.) I don't think the time zone offers an answer unless it is tied to another preset change. But perhaps this new data offers other cues.
My old Mac Mini keeps resetting to earlier time than now. It won't keep the current time unless I set it in preferences, and start it up again. Then it looses the current settings the next time it starts up.
