Question

the sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the west but clock shows same time how does it happens

Answer 1

there are a lot of time zones passing through India. now it became very hard to understand what the time is cross india so an indian standard time[IST] was created which made time all over india the same. this is why sun rises quickly in arunachal pradesh and late in gujarat.

Answer 2

from gujarat to arunachal pradesh there is a time lag of two hours. hence the time along the standard meridian of india passing through mirzapur (in uttar pradesh ) is taken as the Standard time of the whole country.the latitudinal extent influences the duration of the day and night , as one moves from south to north.