Was it on time — or did they arrive just in time?
After Wednesday’s taxiway collision at Raleigh-Durham, more than a dozen flights were delayed while the airfield was closed. Some passengers probably grumbled that nothing was on time that afternoon. But somewhere else in the story, a ground crew almost certainly cleared the wreckage just in time for normal operations to resume. Same three words, rearranged — completely different meaning.
On time means punctual — exactly when a timetable, schedule or plan says something should happen; neither early nor late. In time means before a deadline, before it’s too late for something to happen at all — with a little (or not much) time to spare. A flight can leave on time at 14:00 sharp; a passenger can sprint to the gate and arrive in time to catch it, one minute before the doors close.
Watch out for the mix-up: ✗ “The ground crew arrived on time to stop the fire from spreading” is wrong, because there’s no schedule to keep — only a deadline to beat. ✓ “The ground crew arrived in time to stop the fire from spreading” is correct. If you can replace the phrase with “before it was too late”, reach for in time; if you can replace it with “punctually” or “as planned”, reach for on time.
Continue reading Structure: ‘On time vs in time’