Upon receipt of the certificates and certified copy of the proposed ordinance, the Clerk shall certify the fact to the Council at its next regular meeting. Council shall provide for submitting the proposed ordinance to the electors on the next regular day designated by State law for the holding of a primary or a general election provided that such election day shall occur at least thirty (30) days after the receipt of the Clerk's certificate by the Council, except that Council may provide for submitting the proposed ordinance to the electors at a special election when two-thirds of the members elected to the Council specifically determine such to be necessary. (Amended 11-6-62)