Request additional AM/PM clock selection feature via GUI on MATE desktop

Please add AM/PM clock selection feature via GUI on MATE desktop, if can wait for the feature in Ubuntu MATE 22.04 LTS :hugs:

Have you seen method 3 here:
https://goinglinux.com/articles/ClockFix_en.htm
There is a lot of work being done in many areas before we get there, but this seems to be the direction things are going for 22.04.