You could get a jump hour watch, meaning the hour isn’t a slowly moving hand but instead jumps from 6 to 7 with a jump, avoiding potential mixing up of hours, it would make it easier to read those 24h

Like this watch

Edit: The original watch linked is a weird one, it’s not a jump hour watch but instead it has a jumping dial to turn it from a 12h to a 24h, very neat! I can’t seem to find a 24h jump hour watch apart from this 30k breguet lol