How can I show seconds on macOS BigSur's menu bar clock? I work in an environment where seconds are critical.
Is there a way to display the time with seconds in the menu bar on macOS Big Sur? More specifically, I am referring to the Date and Time at top right in the menu bar which users can click on to open the Notification Centre.
The instructions I find on the Internet seem to pertain to older macOS versions, and are no longer applicable.
On macOS older than Big Sur, the System preferences can be configured to show seconds on the menu bar clock:


Apple has changed up the menu bar on Big Sur specifically and people have opinions about that for certain. There is no seconds display that’s easily enabled on 11.3 and below.

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