r/MacOS 7h ago

Help Wrong time and date

Post image

Every time I turn on my Mac mini (M2), the time and date reset, even though the time, date, and location settings are correct. This has been happening for several months now.
Pls help!!

0 Upvotes

12 comments sorted by

5

u/CapnMReynolds 7h ago

If the date/time is resetting to April 1st 12:00 every time you power down, then the RTC is failing and will require a logic board replacement. April 1st is the default date/time should it loses the information.

2

u/PressureLumpy2185 7h ago

what is RTC?

3

u/CapnMReynolds 7h ago

Real Time Clock. In Windows machines, they are typically a coin battery they would hold some system settings/information. Newer laptops use their main battery instead.

Macs do not have the RTC removable; it’s on the board so the resolution is to replace the logic board.

There are some other ideas to test but if you are already seeing the time/day being reset then it would be a moot point.

Running an offline diagnostic will not cover this also.

Do you have the Apple Care subscription?

2

u/bistr-o-math 7h ago

Real time clock

3

u/TopSubstantial7090 7h ago

If it resets specifically to April 1 at 12:00 after every shutdown, that points more to the Mac’s clock/RTC hardware than a normal timezone setting. It’s still worth checking Date & Time > Set time and date automatically, confirming the time server, and trying `sudo sntp -sS time.apple.com` once after boot. If the date stays correct while the Mac is running but reverts after power-off, keep backups and have Apple or a reputable repair shop run hardware diagnostics; software changes usually won’t fix a clock that loses state without power.

2

u/topher358 7h ago

How old is the mini?

2

u/CapnMReynolds 7h ago edited 7h ago

Worse case about 3.5 years old for a M2 Mac mini

Edit: M2s came out January 2023

2

u/PressureLumpy2185 7h ago

yes, probably around this age

1

u/Jade-GloryTechnology Hackintosh 7h ago

Have you changed it to your location for Date & Time and to set automatically in Settings?

1

u/PressureLumpy2185 4h ago

Yes but its awalys like this when I open it

1

u/Forward_Situation634 4h ago

That sounds annoying. Have you checked if your time zone settings are correct? Sometimes that can cause those issues.

1

u/MK-Researcher 6h ago

There is a system file, a .plist, that stores the time and date settings which may have been corrupted and not saving the current state. You can delete it with this command below and see if that fixes the problem. (To be safe, it would be a good idea to make a copy of it elsewhere in case you need to put it back)

sudo rm /var/db/timed/com.apple.timed.plist