Soon, but not exactly when.
I'll visit you one of these days when I have more time.
나중에 시간이 있을 때 너를 한 번 방문할 거예요.
If things continue like this, something will happen soon.
If you keep acting like that, one of these days you'll get in trouble.
그렇게 계속 행동하면 곧 문제가 생길 거예요.