This Act comes into effect on the date of promulgation; provided, however, that the provisions of Article 9 of the Supplementary Provisions (limited to the provisions amending Article 72-5, paragraph (1), item (iv) of the Local Tax Act), the provisions of Articles 10 through 13 of the Supplementary Provisions, and the provisions of Article 14 of the Supplementary Provisions (limited to the provisions amending Article 4, item (xxviii) of the Act for Establishment of the Ministry of International Trade and Industry (Act No. 275 of 1952)) come into effect on the date specified by Cabinet Order within a period not exceeding six months from the date of promulgation.