speaking time on iMac monterey

I've got a slightly weird situation with the computer speaking the time which is what I want it to do I've got it set to

24 hours which I wanted to do

but I really would like Daniel to speak the time in 24 hours

but Daniel chooses not to do that but speaking 12 hours

which I've not heard before is anybody aware of how I might be able to alter this? Very irritating thing and probably not very important but just very annoying