India has the fortune of being a country that is not too big east to west and having a single time zone is very comfortable for everyone. Didn't realize that a country as big as China has just one time zone.
Most of the population IS in the east, its just a few unlucky Xinjiang/Tibet residents who have to deal with a weird time zone. You don't even notice it very much in Kunming or Chengdu. I didn't even realize it was an issue until I visited Urumqi.