And, I might be wrong but seeing both Bombay and Calcutta on a world time watch is very rare isn't it? India, with its weird GMT +5:30 is almost always left aside from world timers, no?
When I look at world timers, i am always looking whether it has delhi or bombay mentioned on it which is difficult with their .30 time difference. Quick edit. Just looked it up - they also have a 160th ann re-edition?