behind the times—
1. (of things) old-fashioned or out of date:
- The science books of twenty years ago are behind the times now.
2. (of people) using things not in style; following old ways:
- Mary thinks her parents are behind the times because they still do the foxtrot.
behind time—
1. (of a clock) slow; behind the correct time:
- This option lets you set your computer clock several minutes ahead or behind time.
2. behind schedule; after the usual or proper time:
- The train was a good deal behind time, and therefore the stop was curtailed as much as possible.