Yes, it's really quite basic - especially as watches & clocks tend to be digital, it's pretty standard, surely
No, my watch is analogue. The clock in my kitchen is analogue. The clock on the mantlepiece in my living room is analogue. The clock in the office at work is analogue.
My clock / radio alarm is digital, but has am/pm button and gets to 12 then starts again.
Yea, everybody in the U.K., surely? It’s on every shop opening hours notice, most written appointment confirmations, the digital clocks on most appliances.
Not where I live (in England) - I've just checked a couple of local shops and I checked the Drs, and both say 8am - 8pm type times.
But people do use the 24 hour clock every day!
But what people are trying to explain to you is NOT EVERYONE does.
Yes, I know railway timetables are in 24hours, but I don't that often get on a train, and when I do need to, I am lucky enough to live by a busy line and I know the next train will be along within the next 10mins - I don't need to look up the timetable. I can understand a timetable, but that is different from having instant recall.
Don't be ridiculous @Bamboocat. Over the decades we have all learned and forgotten so many things we once held in our memory - phone numbers, song words, our part in a play, car registration numbers, passwords, names of classmates or colleagues or team mates, specific things we learned for exams (the periodic table, maths formulas, Shakespeare quotes, history dates, etc etc etc.) Of course no human can retain everything they ever learn.
I personally don't have a problem looking at 17:00 and knowing that is 5pm, but I "think" in 5pm / '5 o'clock', not in '17:00'
Once again, some posters seem to struggle with the fact that other folk might not have the same lived experiences that they do.