This is expected to happen sometime between 2015 and 2019.

"It's going to happen sometime, but you really don't know when."

Perhaps it, or something similar, may have happened to you sometime.

"We've avoided famous people until now, but I was going to have to let it happen sometime."

No matter how unlikely, anything which is possible must happen sometime.

I think that will happen sometime in the next six months.

Miles hadn't heard of one, but it had to happen sometime.

That would probably happen sometime in the next couple of hours.

The hope is that the next exchange will happen sometime in late 2007 and early 2008.

I wish something good would happen on the surface sometime.