Notified on Aug 27, the rules give Indian Standard Time legal force for the first time, and reroute the country's timing infrastructure through Indian sources.

India's government has introduced new rules mandating Indian Standard Time (IST) as the sole official time reference, with a 180-day compliance period for implementation.

New rules mandate Indian Standard Time as the single national reference. These rules will come into force 180 days after their official gazette publication. The move aims to…