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Question
State the effect of East-West extent of India on time.
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Solution
Effect of East-West extent on time
- The west to east extent leads to difference in local time from meridian to meridian.
- The local time changes by 4 minutes for every 1∘ difference in longitude (meridian).
- The time difference between the two extreme west and east points (Gujarat and Arunachal Pradesh) of India is about 2 hours.
- The sun rises 2 hours earlier in the east than the west.
- The local time of 82∘30′E longitude is taken as the Indian Standard Time.
- This longitude is known as the Standard Meridian of India.
- Its time is taken as standard throughout the country and is called IST.
- The west to east extent leads to difference in local time from meridian to meridian.
- The local time changes by 4 minutes for every 1∘ difference in longitude (meridian).
- The time difference between the two extreme west and east points (Gujarat and Arunachal Pradesh) of India is about 2 hours.
- The sun rises 2 hours earlier in the east than the west.
- The local time of 82∘30′E longitude is taken as the Indian Standard Time.
- This longitude is known as the Standard Meridian of India.
- Its time is taken as standard throughout the country and is called IST.
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