Where, on the effective date of the adoption or amendment of this Zoning Ordinance, a lawful use of land exists that is no longer permissible under the terms of this Zoning Ordinance, as enacted or amended, such use may be continued, so long as it remains otherwise lawful, subject to the following provisions:
(a) No such nonconforming use of land shall be enlarged or increased or extended to occupy a greater area of land than was occupied upon the effective date of the adoption or amendment of this Zoning Ordinance.
(b) No such nonconforming use shall be moved in whole or in part to any other portion of the lot or parcel occupied by such use upon the effective date of the adoption or amendment of this Zoning Ordinance.
(c) If such nonconforming use ceases, for any reason, for a period of more than six (6) months, or a nonconforming use of land which is seasonal in nature is discontinued or does not open for business during a twelve (12) month period, any subsequent use of land shall conform to the regulations specified in this Zoning Ordinance for the district in which such land is located.