Hello Clock_Failure_macbook,
Welcome to Apple Support Communities!
For help with the date and time on your Mac being incorrect we recommend following the steps below to see if we can get it corrected to the correct time.
- "Make sure that your Mac is connected to the internet.
- Open Location Services settings and make sure that Location Services is turned on. Then scroll to the bottom of the list of apps and services and click the Details button next to System Services. Make sure that "Time zone and system customization" is turned on.
- Open Date & Time settings and make sure that the option to set time and date automatically, as well as the option to set time zone automatically, are turned on.
- Restart your Mac.
Set the date and time manually
If your device still shows an incorrect date, time, or time zone, change each setting manually instead of using Set Automatically. For example, you might have iOS 9 or earlier, and your country or region, or government changes the time zone or the observance of daylight saving time.
On your Mac
Open Date & Time settings and turn off the option to set time and date automatically, as well as the option to set time zone automatically. You can then set time, date, and time zone manually."
If you can't change the time or time zone on your Apple device
Let us know if you have any questions.
Thank you for using Apple Support Communities.
Take care!