It's possible to mix up dates and times from each other too (is 12.30 Dec 30 or half past noon?)
Why GP would have exams at midnight is anyone’s guess, but the example can only be interpreted as just before midnight.
11:59pm would be 23.59 in other places. The mere use of "11" would suggest morning.
11:59pm is 23:59 (in 24h)
afaik everywhere...
but if i understand it correctly:
12:00pm is 12:00 (in 24h)
12:59pm is 12:59 (in 24h)
01:00pm is 13:00 (in 24h)
No, it does not. We 24ers read clock. 11 doesn't suggest morning.
March 24 at 11:59pm
That would be close to:
March 25 at 12:00am
A bit less confusing but still:
March 25 at 00:00am
https://kimiwo.aishitei.ru/i/ytPbouZ21iYnNXi7.png
Not all too uncommon to see bars and bookstores open until 27:00 or 28:00 and it's surprisingly intuitive when you consider when the bar is open. ie 19:00 ~ 29:00. (7pm - 5am)