The simple yet powerful plan India could follow to ward off impacts of Iran-like disasters

India's vast longitudinal extent of nearly 30 degrees creates a nearly two-hour difference in sunrise and sunset between the easternmost point in Arunachal Pradesh and the westernmost point in Gujarat. The current single Indian Standard Time (IST), based on the 82.5° E longitude passing through Mirzapur, forces a suboptimal schedule on both extremes. In the Northeast, the sun rises and sets very early; adhering to IST means daylight is wasted in the morning, while artificial lighting is required early in the evening. This concept, known as daylight saving, is crucial for understanding the geographical rationale for multiple time zones. Countries with large longitudinal spreads, like Russia, Canada, and the USA, utilize multiple time zones to align working hours with natural daylight. The informal practice of 'Bagaan Time' (Tea Garden Time) in Assam, set an hour ahead of IST, highlights the practical necessity of adapting to local solar time for labor-intensive industries. UPSC questions often explore the physical geography behind time calculation and the implications of a country's longitudinal extent on daily life and economic activity.

The economic argument for multiple time zones centers on energy efficiency and demand management. A single time zone leads to a synchronized peak in electricity demand across the country, typically in the evening when offices close, streetlights turn on, and residential usage spikes. This uniform peak places immense stress on the national grid, requiring baseload power (often coal) to meet the sudden surge. By staggering working hours through different time zones, the evening peak demand would be flattened out, allowing for better integration of renewable energy sources, particularly solar power. When it's evening in the East and demand rises, the West is still producing abundant solar energy. This load curve optimization is vital for India's Energy Transition goals. The editorial highlights that regions like Bihar and the Northeast, which are less developed, suffer disproportionately from high energy costs during peak hours. Optimizing daylight could lower household energy bills and improve industrial competitiveness in these regions by reducing reliance on expensive, imported fossil fuels during peak load times. This connects directly to GS-3 topics on infrastructure, energy security, and sustainable economic development.

The decision to maintain a single time zone post-independence was largely driven by the imperative of national integration. The perceived risk was that multiple time zones might exacerbate regional divides or complicate administrative coordination in a newly formed, diverse nation. However, the concept of 'One Nation, One Time' is increasingly being challenged by pragmatic economic and environmental needs. Implementing multiple time zones would require significant administrative adjustments, particularly for national networks like Indian Railways, airlines, and broadcasting schedules. The complexity of managing these transitions, especially at the borders of the new time zones, is a primary reason the government has hesitated to implement the change, despite recommendations from bodies like the Council of Scientific and Industrial Research (CSIR). The debate illustrates the tension between administrative simplicity/symbolic unity and the practical necessity of optimizing resource allocation and energy use. UPSC mains questions could ask candidates to critically evaluate the necessity and feasibility of multiple time zones in India, weighing the economic benefits against the administrative challenges and potential socio-political implications.