Section 22: Aggregation of concurrent sentences in reckoning imprisonment.

Where-(a) a person has been sentenced to imprisonment in respect of each of two or more crimes that, in the opinion of the court hearing the petition, arose substantially out of the same acts or omissions; and
(b) the sentences were ordered to be served, in whole or in part, concurrently,
then, in reckoning for the purposes of section 16(1) (c) of this Act the period for which that person has been sentenced in the aggregate, any period during which two or more of those sentences were to be served concurrently shall be taken into account once only.