Commencement of Tripura SGST amendment: provisions activated on staggered commencement dates as notified by the State Government. The State Government, under sub section (2) of section 1 of the Tripura State GST (Second Amendment) Ordinance, 2019, notifies commencement dates: section 22 to commence on the first appointed date in August; section 13 to commence on the first appointed date in September; and sections 2 to 21, except section 2, section 7, section 10 and sections 13 to 20, to commence on the first appointed date in January, thereby bringing those provisions into force.