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?

FROM GUJARAT TO ARUNACHAL PRADESH THERE IS A TIME LOG OF TWO HOURS. TIME ALONG THE STANDARD MERIDIAN OF INDIA (82 DEGREE 30 ' E ) PASSING THROUGH MIRZAPUR (IN U.P.) IS TAKEN AS THE STANDARD TIME FOR THE WHOLE COUNTRY. THAT IS WHY THE WATCHES SHOW THE SAME TIME.

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The local times of places which lie on different meridians are bound to differ. The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west. This causes a time lag of two hours from Gujarat to Arunachal Pradesh. To avoid confusion due to time differences and to have a standard time for reference, the time along the meridian (82º 30 ' E) passing through Mirzapur (Uttar Pradesh) has been taken as the standard time for the entire country. This is why the watches show the same time.

we all know that the sun takes 4 minutes to cross 1 longitude. there are nearly 30 longitudes between Gujarat and arunachal Pradesh. thus the sun takes 2 hours to cross these 30 longitudes and that is why the sun rises 2 hours lately in Gujarat. sinceall the placesin India havedifferent times similar to that of Gujarat andarunachal Pradesh,in order to avoid the confusion the standard time of India is taken as 82 degree1/2 minutes. that is why clocksin Gujarat and arunachal Pradeshshow same time though the sun rises 2 hours lately in Gujarat.

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we all know that the sun takes 4 minutes to cross 1 longitude. there are nearly 30 longitudes between Gujarat and arunachal Pradesh. thus the sun takes 2 hours to cross these 30 longitudes and that is why the sun rises 2 hours lately in Gujarat. sinceall the placesin India havedifferent times similar to that of Gujarat andarunachal Pradesh,in order to avoid the confusion the standard time of India is taken as 82 degree1/2 minutes. that is why clocks in Gujarat and arunachal Pradesh show same time though the sun rises 2 hours lately in Gujarat.

we all know that the sun takes 4 minutes to cross 1 longitude. there are nearly 30 longitudes between Gujarat and arunachal Pradesh. thus the sun takes 2 hours to cross these 30 longitudes and that is why the sun rises 2 hours lately in Gujarat. sinceall the placesin India havedifferent times similar to that of Gujarat andarunachal Pradesh,in order to avoid the confusion the standard time of India is taken as 82 degree1/2 minutes. that is why clocks in Gujarat and arunachal Pradesh show same time though the sun rises 2 hours lately in Gujarat.

India is situated between 68O7’ to 97O25’E Longitude which makes the longitudinal extent of India about 30O. 1O difference in longitude is equivalent to 4 minutes hence, 30O = 120 minutes (1O = 4 minutes, 30O = 30 x 4 = 120 minutes or 2 hrs).

It means that the sun rises about 2 hrs earlier in the easternmost part of India i.e. Arunachal Pradesh than in the westernmost part i.e. Gujarat or Rajasthan. That is why when the sun has already risen in Arunachal Pradesh it is still dark in Gujarat.