If it is 10.00 a.m. I.S.T., then what would be the local time at Shillong on 92°E longitude?
- A9.38 a.m.
- B10.38 a.m.Correct
- C10.22 a.m.
- D9.22 a.m.
Explanation
To find the local time at Shillong, follow these steps:
-
Identify the difference in longitude: Indian Standard Time is calculated based on 82.5 degrees East longitude. Shillong is located at 92 degrees East. The difference between the two is 9.5 degrees (92 minus 82.5).
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Calculate the time difference: The Earth rotates 1 degree every 4 minutes. Therefore, a 9.5 degree difference equals 38 minutes (9.5 multiplied by 4).
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Determine the direction: Since Shillong is further East than the IST meridian, its local time will be ahead of IST.
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Adjust the time: Add 38 minutes to the IST of 10.00 a.m. This results in a local time of 10.38 a.m.
Therefore, option B is correct.
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