Adjustment for differences in lengths of rental periodsN.I.
67.—(1) In ascertaining for the purposes of this Order whether there is any difference with respect to rents or rates between one rental period and another (whether of the same tenancy or not) or the amount of any such difference, any necessary adjustment shall be made to take account of periods of different lengths.
(2) For the purposes of an adjustment referred to in paragraph (1)—
(a)one month shall be treated as equivalent to one-twelfth of a year; and
(b)one week shall be treated as equivalent to one fifty-second of a year.