1. the other Day past simple
2. the other day
An extraordinary thing happened to me the other day
I saw the price of one of your books in Smith's the other day
I am sure I saw you in the city centre the other day. It must have been Monday or Tuesday.
I guess I saw your neighbour in the shopping mall the other day.
I read something about it the other day.
I saw John the other day.
I bumped into George the other day, he looked well.
3. the next day