In a bid to restrict air and noise pollution, the Jharkhand State Pollution Control Board (JSPCB) has issued an order, allowing bursting of firecrackers for two hours from 8 pm on Diwali, an official said on Sunday. The two-hour window will also be applicable on Gurpurab, Chhat, Christmas and New Year, but the timings for commencement of firecracker bursting will vary, he said.