Period of operation of orders under sections 55, 56 and 57. 41

58. A direction made under section 55, 56 or 57 not to enter any particular area 1 [or such area and any district or districts, or any part thereof, continuous thereto, as the case may be,] shall be for such period as may be specified therein and shall in no case exceed a period of two years from the date on which it was made.