On May 18, 1974, India conducted its first nuclear test in Pokhran, code-named Operation Smiling BuddhaOn May 18, 1974, India conducted its first nuclear test in Pokhran, code-named Operation Smiling Buddha On May 18, 1974, India conducted its first nuclear test in Pokhran, code-named Operation Smiling Buddha India Science News | Latest Updates on Scientific Discoveries | The Hindu