Under the Environment and Climate Change Department s Noise Pollution (Regulation and Control) Revised Rules, 2017, the concerned district collectors have been authorized to announce exemptions for the use of loudspeakers on any 15 days in a year from 6 am to 12 pm, the release said. Navratri Festival 2022: Maharashtra Government Permits Use of Loudspeakers Till Midnight in Mumbai on October 1.