I have seen a number of new users over a period of time ask how to change from 24hr time to 12hr time format.
I had thought I remembered how to do that. But information I was giving appeared to be wrong.
It was the person a number of users were trying to help that found a utility to do the job and even linked to it.
I thought that was important enough to pass along on this forum.
So the link to that initial post that links to another with the utility is
I hope this helps some new and current users of Puppy.