The bench reiterates the use of firecrackers with Barium and those not approved by the CSIR-NEERI as green crackers shall not be permitted. New Delhi Days ahead of Diwali, the Supreme Court has allowed the bursting of green firecrackers in Delhi-National Capital Region (NCR) from 6 and 7 am and from 8 to 10 pm on November 7 and 8. Diwali falls on November 8 this year.