Commencement of Manipur GST amendment: most provisions commence on October 1, while select sections are deemed effective earlier. The State Government, invoking its power to appoint commencement dates under the Ordinance, appoints 1 October 2023 as the date on which sections 2-28 (except sections 16-21) shall come into force and declares that sections 16-21 shall be deemed to have come into force from 1 August 2023.