some other time—on a different occasion in the future but not now:
- I could go back there, I mean some other time.
some time or other—(also: at some time or other)
1. sooner or later (implying the certainty of a future event):
- You can’t go on for ever at any game, and not get tumbled some time or other.
2. on an occasion in the past:
- We have all heard of the déjà vu illusion, and most of us have experienced it at some time or other.