Q.Does India need to have more than one standard time? If yes, why do you think so?

India does not strictly need more than one standard time, but there is a strong scientific and practical case for it. The country's longitudinal extent is about 30 degrees, from roughly 68°E in the west to 97°E in the east. Since the Earth rotates 15 degrees per hour, this span creates a natural time difference of about two hours between the westernmost and easternmost points.

The single Indian Standard Time (IST) is set at 82.5°E, which passes through Mirzapur in Uttar Pradesh. This means the sun rises and sets nearly two hours earlier in the northeast (like Arunachal Pradesh) than in the west (like Gujarat). In practical terms, people in the northeast start their day in darkness during winter, while offices in the west close while it is still bright.

So, yes, India could benefit from a second time zone — for example, one for the northeast — to better align daylight hours with daily activity. This would improve energy efficiency, reduce sleep disruption, and make daily life more comfortable. However, the government has not adopted this because a single time zone simplifies railway operations, communication, and national coordination. The trade-off is between administrative convenience and regional daylight alignment.

India stretches from about 68°E in the west to about 97°E in the east — a span of nearly 29 degrees of longitude. Since the Earth rotates 15 degrees per hour, that translates to a difference of almost two hours between sunrise in the far east (Arunachal Pradesh) and the far west (Gujarat). Yet the whole country runs on one clock: Indian Standard Time, set at 82.5°E, which passes near Mirzapur in Uttar Pradesh. That means when the sun rises at 4:30 a.m. in the northeast, it is still dark until nearly 6:30 a.m. in the west. The question is whether this single clock is a blessing or a burden.

The case for keeping one time zone is strong. A single standard time simplifies railways, airlines, banking, stock markets, broadcasting, and government work — imagine coordinating a train that crosses the entire country if every state had its own clock. It also reinforces a sense of national identity: one nation, one time. For a country as diverse as India, the symbolic unity of a shared clock is not trivial. Most Indians also live by the sun’s rhythm, and a single time zone means the official working day roughly matches daylight across most of the country, even if imperfectly.

But the argument for a second time zone is equally real, and it comes down to human well-being and energy. In the northeast, the sun rises very early and sets very early. People wake up in darkness, but by late afternoon the sun is already low, and by early evening it is dark — long before the standard workday ends. This wastes daylight, forces more artificial lighting in the evening, and disrupts sleep patterns. Some studies suggest that shifting the northeast to a time zone closer to its actual longitude (say, UTC+6 instead of UTC+5:30) would let people use daylight more efficiently, reduce electricity consumption, and improve health. The same logic applies, in reverse, to the far west, where the sun rises late and sets late — a separate zone could align office hours better with daylight there too.

The practical hurdles, however, are serious. A second time zone would create a two-hour difference between the northeast and the west — not just one hour. That complicates air travel, teleconferencing, and any national operation that runs on a single schedule. The railway system, which is the backbone of Indian transport, would need to publish timetables in two time zones, and passengers crossing the boundary would face confusion. There is also the question of where to draw the line — which states go east, which go west — and no boundary is clean. Some experts have proposed a compromise: keep IST but shift the official working hours in the northeast, so offices open earlier and close earlier, without changing the clock itself. That gives many of the benefits of a second time zone without the administrative chaos.

So does India need more than one standard time? The honest answer is: it would help in the northeast, where the mismatch between clock time and solar time is most acute. But “need” is a strong word. India functions perfectly well with one time zone, and the disruption of switching would be enormous. A more practical path is to adjust working hours regionally, which achieves much of the benefit without touching the clock. The debate is really about how much we value daylight efficiency versus administrative simplicity — and that is a judgment call, not a mathematical one.