Local time depends on longitude; Gujarat (west) and Assam (east) have different sunrise times. Standard time (IST) unifies the country under one time zone to avoid confusion.
class 6 Social Science Textbook Chapter 1 question answer
class 6 Social Science Chapter 1 Locating Places on the Earth solutions
Local time varies based on the Earth’s rotation and a place’s position relative to its longitude. Since Assam is further east than Gujarat, the sun rises earlier there, leading to an earlier local time. However, India follows Indian Standard Time (IST), which is based on the 82.5°E longitude. This single time zone helps avoid confusion, especially in a country as wide as India. Without standard time, daily activities and communication would become challenging across regions with different local times, as seen between Gujarat and Assam.
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