Administration of Kerala's Thiruvananthapuram has imposed restrictions on firecracker use for Diwali, Christmas and New Year celebrations. Firecrackers will only be allowed between 8-10 pm on Diwali, while the same will be permitted for 35 minutes between 11.55 pm - 12.30 am on Christmas and New Year's day. District Collector Navjot Khosa said only eco-friendly green crackers should be sold.