I mean, do they say “I sleep at 9pm” or more like “I sleep at 2100 hrs” even while they are talking informally? 2100 hrs sounds very formal to me, but yeah, I was just wondering if they used 24 hour format for only official and government proceedings and used 12 hour format for casual stuff.
Depends. Some people will say “21 Uhr”, some people will say “9 Uhr”, one isn’t more formal than the other.
Of course with the 12h format you always need additional context to know if you mean in the moring or in the evening, since we don’t use “am/pm”.
I always prefer 24 uhr ;) format and usually set my devices to it, but I feel it is too formal to tell a friend, “hey, I will call you at 1700 hours”
That’s actually not a thing. It goes from 23:59 to 00:00
And when you’d say it it would be “23 Uhr 59” to “0 Uhr”.