on time - at or before a prearranged time - not late. (just) in time for; in time to; in time (for/to implicit) - at or before it is time for some event or to do something - with a little time to spare before something else begins - not necessarily prearranged - usually not prearranged. — Hurry up if you want to be on time. The plane leaves at 8:00. — Don’t worry. I’ll be there on time. I won’t be late. — How can you be there on time? It’s already 7:30! The way you’re going, you’ll be there just in time to wave goodbye to it as it takes off! — I don’t think so. I think I’ll be there in time to relax and wait. They never board on time anyway. — Even so, you need to be there in time for them to check your boarding pass, and all that.
– on time - at, You’ve there on