This is a script (that I keep in /Applications/Utilities/Scripts) that you can run to fix a few common issues with macOS time synchronzation. I haven't quite figured out the root cause, although perhaps this is an issue with the CMOS battery? Upon some research, others have had similar issues, so I wanted to share a script I created to help speed up the fix for this issue.
Before the first run, you must allow this script execution permission with: chmod +x FixClock.sh
Run with ./FixClock.sh and enter your root password when prompted.
Notes: Use this script whenever you notice an issue with your machine's time synchronization, the script will not run automatically (yet). Feel free to create a Desktop shortcut by changing the extension to .command and placing the script wherever you'd like, or run with the full filepath (e.g. /Applications/Utilities/Scripts/FixClock.sh)
The script performs the following elevated functions:
- Deletes
/var/db/timed/com.apple.timed.plist, which stores information about the current time server - Enables Automatic Clock Synchronization and Network Time
- Prints to console the current time zone and time server
- Soft reboots the machine without reopening any previously-opened windows
I have only tested this script with macOS Sonoma 14.1.2, but I would anticipate this would work with macOS 10.7+.