Let me start off with few basic facts of our nation – the 7th largest country in the world and spreads 2,933 km from east to west. This particular fact is interesting because in such a large nation we still follow just 1 time zone. Allow me to point out the impediment in this structure The Western most state in India – Gujarat and the Eastern most state in India – Arunachal Pradesh experience sun rise with roughly 2 hour time difference. When the sun rises at 6 am in Gujarat it has already risen at 4 am in Arunachal Pradesh, this means people in the eastern province spend a good chunk of the sunlight sleeping and at the same time work a good period in its absence. During the British colonial time, India had 2 time zones – The Bombay National Time and the Kolkata National Time, this system was soon abolished after the railways started connecting the nation much quicker and then we adopted the IST so that confusion can be avoided as a whole, but the flaws still stand. To all who doubt the 2 National Time Zone may just look at the USA where they follow 4 time zones for maximum efficiency and daylight savings scheme has also been implemented. As of now our nation is not looking ahead to this system and considering how slow everything gets pulled up in our nation I would say that this system is unlikely to be erected during our time.
Another fascinating point to note is that right now we stay 5 and a half hour ahead of the Greenwich Mean Time (GMT + 5:30) but if this number is to move to 6 hours, our nation would save nearly 2 billion INR yearly in electricity alone. These facts were submitted years ago and to this day, no effective action has been taken.