One of the changes with macOS Sonoma is to the login window, where the username blanks and icons were made smaller and moved down to the bottom of the screen and a large clock display is enabled by default near the top of the login window.

For folks who don’t want the clock display, it’s possible to turn it off via System Settings. In the Lock Screen settings, set the Show large clock option to one of the following settings:

• On Screen Saver and Lock Screen
• On Lock Screen
• Never

The Never setting will stop from being displayed on either the login window or as part of the screen saver. 

For more information, please see below the jump.

For those who want a profile which can enforce the Never setting, please see below, and the GitHub link below:

https://github.com/rtrouton/profiles/tree/main/DisableLoginWindowClock