Patna (Bihar) ,May 07, 2025 ( ANI ): Nationwide blackout drill to boost civil defense readiness began on May 07. Blackout began in Patna. India's Ministry of Home Affairs directed all states to conduct a massive mock drill on May 7 across 244 civil defence districts. The exercise is to ensure India’s readiness in case of wartime blackouts, air-raid situations and evacuation procedures during the potential war threats.