Eutelsat 21B which is located at 21.5 East is easily receivable in Tamil Nadu. Sharaf from Coimbatore has got this Eutelsat 21B with his 4 feet offset dish. With such a small dish he is able to get 95% signal quality.
People having 60cms dish also can try but I am not sure about the signal strength in other parts of India. Personally I cannot try this in Chennai as trees and buildings blocks clear view of the satellite in that angle for me.
Image of the reception of Eutelsat 21B at 21.5 East in Coimbatore on a 4 feet dish: