He asked me if I was available on a certain date.

"What if the mission absolutely had to go off on a certain date and time?"

"They don't have to wait for a certain date to see a play."

If you want something delivered by a certain date, always phone.

"I don't like the idea of having to do a show on certain dates twice a year," he said.

He himself had to be somewhere in Iraq by a certain date.

No certain dates can be given of his birth or death.

He would provide me with a reservation on it ahead for a certain date.

But we have no set plan saying he'd come back by a certain date, say Sept. 15.

He can negotiate with any club through a certain date.