How to enable seconds mode in clock display on Apple TV, Apple Vision Pro, and iPad?

If you have suggestion for Apple to improve on their system software, then submit those one-by-one through their feedback forms, by selection of a best fitting product for your issue:

Product Feedback - Apple

Your reply caused me to pull-out the clock’s actual user manual.

It’s capable of being manually set for 12x time zones. (as it’s only a 12-hour clock; the “other 12” time zones are unnecessary)

That said, it’s “sync’d” from WWVB and WWVBH … so the further you are from Colorado or Hawaii, the weaker the sync signal …

… but the Low Frequency 60 kHz signal (5k meters) has some long legs.

Please DO submit feedback to Apple as suggested.

My own “work-around” … one of these:

https://www.lacrossetechnology.com/products/wt-3143ax1

My own “work-around” … one of these

Pretty neat, but unfortunately for me only four timezones are listed as supported.

Correction:

WWVH in Hawaii does NOT transmit the 60 kHz clock-sync signal (i.e. WWVB)

That signal only originates in Colorado.