One of our most popular articles has been our How-To: Change the system date on OS X in terminal. That article was written in 2016, back when macOS was called OS X. I have updated it to reflect that ...

If you’ve left your Mac lying around for a very long time or if you bought a used one, the system date may be out of whack. Often the system date on neglected Macs gets reset to the year 2001, which ...