90. The period of 120 days contemplated in section 89 shall be extended by sixty days where the territory contemplated in the notice of motion is not included in a zone identified in the planning programme as a zone to be protected and provided that at the sitting at which the notice of motion was given, the council passed a resolution stating its intention to amend its planning programme to that effect.
Notwithstanding the foregoing, the notice of motion becomes null and void as soon as it becomes clear that it will be impossible for the amendment to come into effect before the expiration of the additional period of sixty days.