<h1>Limited sale and bursting of certified green firecrackers allowed for short windows around Diwali amid enforcement concerns</h1> The Supreme Court relaxed a prior ban and permitted the limited sale and bursting of certified green firecrackers in Delhi-NCR for specified hours (6-7 am and 8-10 pm) on the day before and the day of Diwali, authorising sales for a defined period (Oct 18-21) while prohibiting e-commerce sales. Experts warn enforcement gaps, understaffed regulatory bodies, inadequate controls on production/import of non-certified crackers, and concentrated bursting windows may negate emissions reductions and worsen air quality. Observers say certification and time limits alone are unlikely to prevent a significant pollution spike absent stronger oversight and public awareness.