The Legal Metrology (Indian Standard Time) Rules, 2024, aims to establish a legal framework for standardising timekeeping practices, mandating IST as the sole time reference for legal, administrative, commercial, and official documents.

"IST shall be the mandatory time reference across all sectors, including commerce, transport, public administration, legal contracts, and financial operations," as per the draft rule.

Key provisions include, prohibition of time references other than IST for official and commercial purposes, mandatory display of IST in government offices and public institutions and requirement for time-synchronization systems to ensure reliability, availability, and cybersecurity.

The proposal comes as part of efforts to ensure precise timekeeping in critical national infrastructure, including telecommunications, banking, defence, and emerging technologies like 5G and artificial intelligence.

"Precise time with nanosecond accuracy is essential for strategic and non-strategic sectors," a senior government official told PTI.

Exceptions will be allowed for specialised fields such as astronomy, navigation, and scientific research, subject to prior government approval.

The Department of Consumer Affairs is collaborating with the National Physical Laboratory and Indian Space Research Organisation (ISRO) to develop a robust time generation and dissemination mechanism.

Violations of the proposed rules will attract penalties, with periodic audits planned to ensure compliance across sectors.

Public stakeholders have been invited to submit comments and suggestions on the draft rules by February 14.