Student or Learner
I have a sentence like this: He didn't come until 10 p.m. Now, I know that it means that he came around 10 p.m. What I don't know is, can it also mean that he came sometimes after 10 p.m.? Say at 11 p.m. or maybe even later?
Well, the sentence tells us that he arrived at 10 pm. We have no reason to assume that 'around 10 pm' or 'a minute or two before or after 10 pm' was meant, when it wasn't said.