Disclaimer: of course, everything is a spectrum. To ADHD-people, caffeine has varying effects. Some get tired from it, others it affects less or not at all.
TV time and military time don't even use 24 hours. You can have a TV show that goes from 23:30 to 25:15 (25>24, in 24h it would be 01:15).
I imagine those who call 24h "military time" also say "I'll be home from work on Friday at 4100 AM", which makes about the same amount of sense.