Hey, thats a great idea, Ashish! I was only thinking from the online community's point of view, but your idea is great. That could be a nice exercise in general, because many people don't realize that India has a great atheist past, like the Greeks did.
@ Ajita Kamal
Well, if you haven't checked yet then here's the list.
# Atheist Center
# Bihar Buddhiwadi Samaj (Bihar Rationalist Society)
# Dakshina Kannada Rationalist Association
# Federation of Indian Rationalist Associations
# Hyderabad Rationalist Forum
# Indian Humanist Union
# Kerala Yukthivadi Sangham
# People's Science Center
# Science and Rationalists' Association of India
Apart from that, you can also open your own Atheist/Rationalist organization with the help of CFI(center for inquiry) and SSA(Secular Students Alliance) on your campus.
Do contact them if anyone interested. They do help a lot.