Pierre Fitter has an article in Business World on two timezones for India. My view in the article is against timezones and DST.
Ajay Shah blogged about this recently.
Viral Shah and I wrote a small paper about the need for a single timezone in India. We argue that a single timezone is a convenience, technically sound, and a great proposition in terms of nation building. I would appreciate comments on the paper, either on this blog, or at email@example.com.
I have been told that there are studies of cost savings due to DST or time zones. If you know of any, I would appreciate links or full text PDFs.