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.