On 18th May 1074, India exploded first nuclear devise under the code name of:

India conducted its first nuclear test on May 18, 1974, dubbed the "Smiling Buddha" or Pokhran-I. The event was conducted at the Pokhran Test Range in the state of Rajasthan at 8:05 Indian Standard Time. The device was a plutonium-based implosion device with an 8 to 12 kiloton yield, making India the sixth nation to achieve nuclear status.