Just had to submit something at school. Thinking I have plenty of time, I took it. I wanted to write a note along with the submission, so I took my time until like 23:59:20 when I hit submit.
The fuck you mean submission not possible past deadline? Why is it not the next day 0:00 if exclusive?
The difference from Time.is was +0.015 seconds (±0.067 seconds).
In HS I used to do such timing for comedic purposes, guess it won’t work here.


Yep.
That’s how it used to work on the system we used in high school, and basically everywhere else that had some time limit, which is why “until the end of day” could be otherwise written as 23:59, or 23:59:59. Day doesn’t end at 23:59:00 yet.
Technically, yes, ms, ns,… those are all implied at maximum value.