Why 82 30° east has been …

Accordingly, each country chooses a central meridian. The local time of this Meridian will be the standard time of the country. The standard times which prevail on various meridians are made to differ. The sun rises almost two hours earlier in Arunachal Pradesh when related to Gujarat. This causes a time delay of two hours from Gujarat to Arunachal Pradesh to evade confusion and to possess a standard time for reference. The 82.30 ' Eastern Longitude will be taken as the standard time for the entire country. The time at this Meridian has been affirmed as the Indian Standard Time (IST) entirely around the country as it passes within the center of the country. It has served to avoid confusion that would have arisen by following separate local times or in lack of a uniform time. 82 degree 30 minutes is chosen as standard Meridian mainly because it lies almost in the middle of India. It has stopped a lot of uncertainty from one place to another and has brought peace in time everywhere in the country. The local time of longitude is modified, so, to follow one timing, we have believed 82 degrees 30 minutes to be the standard Meridian.