The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west but the watches show the same time. How does this happen?

Two hours difference between time zones of Arunachal and Gujarat (difference of 30 Deg longitude). Each longitude has time diff of 4 min, making it 120 min or 2 hrs difference. But we have only 1 IST (Indian standard Time) unlike in US where there are multiple timezones. From Gujarat to Arunachal Pradesh there is a time lag of two hours, but the watches show the same time because the time along the Standard Meridian of India (82° 30' E) passing through Mirzapur in Uttar Pradesh is taken as the standard time for the whole country. Because the same standard time for the whole country has been adopted, the watches show the same time in Arunachal Pradesh and Gujarat and in all parts of the country.

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Here , as we know that the sun rises in the east so , the first rise of sun starts from the east side of India . Because of the vast distance between east and west of India , sun rises 2 hours late in Gujarat ( as compared to the Arunachal Pradesh ) . Hence , the time difference between east ( Arunachal Pradesh ) and west ( Gujarat ) is 2 hours . Because of these time difference �� In India we have standard time at whole country by the standard meridian of India ( 82°30�E ) passing through Mirzapur in Uttar Pradesh is taken as standard time for whole country . read less

Concept : We have set some standards to avoid hastle in the domestic time zone. It can be understood as why 1kg=1000gram only.Not 1200g or 1500g. This is due to the metric conventions we have set far earlier. To be price 1kg is the weight of platinum-iridium alloy which should be 39.17 mm both in diameter and height. Answer : From Gujarat to Arunachal Pradesh there is a time lag of two hours, but the watches show the same time because the time along the Standard Meridian of India (82° 30' E) passing through Mirzapur in Uttar Pradesh is taken as the standard time for the whole country. Because the same standard time for the whole country has been adopted, the watches show the same time in Arunachal Pradesh and Gujarat and in all parts of the country. Hope i didn't messed up your neurons.LOL read less