The sun rises earlier in the east than it does in the west. This is because the Earth rotates from west to east. As the Earth rotates, the eastern part of the Earth moves towards the sun, while the western part of the Earth moves away from the sun. This causes the sun to rise earlier in the east than it does in the west.
The clocks in Arunachal Pradesh and Gujarat show the same time, even though the sun rises earlier in Arunachal Pradesh. This is because the clocks in India are set according to the Indian Standard Time (IST). IST is based on the longitude of 82.5 degrees east, which is the longitude of Allahabad. This means that the clocks in India are set according to the time at Allahabad.
Since Arunachal Pradesh is located east of Allahabad, the sun rises earlier in Arunachal Pradesh than it does in Allahabad. However, the clocks in Arunachal Pradesh show the same time as the clocks in Allahabad because they are both set according to IST.