Goa Liberation Day is observed on December 19 every year in India. On this day, in the year 1961, Indian troops (Indian navy, Indian Air force, and Indian Army) reclaimed the Goa territory with little resistance from the governor general Manuel António Vassalo e Silva. He signed the certificate of surrender when Indian Infiltrated the Goan Territory. This way, Portuguese rule on Indian Territory over 450 years came to an end.
Before British, the Portuguese captured several parts of India in 1510. But By the British aggression; most parts of India got freed and by the end of the 19th-century Portuguese colonies in India were limited to Goa, Daman, Diu, Dadra, Nagar Haveli and Anjediva Island.
After the Independence of India the Goa liberation movement started on a small scale to end Portuguese colonial rule in Goa. And followed by a myriad of unsuccessful negotiations and diplomatic efforts with the Portuguese officials, the former prime minister of India, Jawaharlal Nehru, decided to use military operations. The military operations went up to 36-hour that involved attacks by the Indian Navy, Indian Air Force and Indian Army to free Goa from Portuguese. The operation was named ‘Operation Vijay’ meaning ‘Operation Victory’.