Changed the planned time or date for something to happen at a different point in the future.
From re- (again) + schedule, which comes from Old French cedule meaning a small piece of paper or list; the sense of 'planned time' developed in the 19th century.
Scheduling is so common now that we forget it's actually a recent invention—before trains and standardized time, most people didn't need to plan precisely when to meet, so 'rescheduling' something would have made no sense in 1800.
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