innego dnia in inglese:

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.