From Longman Dictionary of Contemporary Englishon timeon timeat the correct time or the time that was arranged Jack was worried about whether he’d be able to get there on time.right/bang/dead on time (=at exactly the right time) The plane arrived right on time.USAGE: On time, in time• On time means ‘at the correct or agreed time’: Please arrive on time. ✗Don’t say: Please arrive in time.• In time means ‘early enough for something or to do something’: He arrived in time for supper. → time
Examples from the Corpus
right/bang/dead on time• Oh no, right on time.• The parade started right on time.• As luck would have it, Piers was dead on time. 