(1)When Commissioners grant a declaration to a life prisoner in relation to a sentence they must specify a day which they believe marks the completion of about two thirds of the period which the prisoner would have been likely to spend in prison under the sentence.
(2)The prisoner has a right to be released on licence (so far as that sentence is concerned)—
(a)on the day specified under subsection (1), or
(b)if that day falls on or before the day of the declaration, by the end of the day after the day of the declaration.
(3)But if he would have a right to be released on or by the end of a listed day (within the meaning of section 4(3)) he has a right to be released on or by the end of the next non-listed day.