This Act comes into effect on the date of promulgation; provided, however, that the provisions adding one paragraph to Article 19, the provisions amending Article 26, paragraph (1), the provisions adding one Article after Article 29 and the provisions amending the proviso to Article 39, and the provisions of the following Article through Article 15 of the Supplementary Provisions, come into effect on the date specified by Cabinet Order on or before March 31, 1978.