grammar - Difference between time and timing? - English Language . . . Intuitively, "time" would mean simply what time does it start, and "timing" would suggest you want a schedule (what time does it start and end and if it's divided into sections what time do each of them start and end) But dictionary definitions don't really support this distinction
ambiguity - Is until inclusive or exclusive? - English Language . . . tl; dr - It's exclusive if the situation described is notable by its absence It's likely to be inclusive if the situation described is notable by its presence At its heart, until describes when the transition happens If you say " X until [time] ", you mean that X becomes not-X on [time] The problem comes, as you note, when [time] is a span of time (like a whole day) rather than an