Grover Cleveland actually said...
I hereby declare and make known that all of the unallotted and unreserved lands acquired from the Nez Perce' Indians by said agreement will, at and after the hour of 12 o'clock noon on the 18th day of November, 1895, and not before, be opened to settlement.
Context
Proclamation 381—Opening of Nez Perce Indian Lands to Settlement, Idaho
11/07/1895