The correct idiom is on time or behind time, not off time. Options 2, 3 and 4 use their prepositions correctly.
Choose the sentence that has the incorrect preposition in it :
Held on 15 Jun 2023 · Verified 13 Jul 2026.
The train is running off time.
It has been five years since I have seen my mother.
Sheela left for the station an hour ago.
Vineet studied till 1am for his upcoming exam.
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