NEW DELHI, July 25 -- Prime Minister Narendra Modi will on Friday become India's second-longest serving premier in consecutive terms, completing 4,078 straight days in office, surpassing Indira Gandhi's uninterrupted tenure between 1964 and 1977, and is only behind the country's first PM Jawaharlal Nehru, a person aware of the matter said on Thursday.

Modi, 74, the first prime minister born in Independent India, was sworn-in for the third consecutive term in June last year, having first entered the top office on May 26, 2014. The Bharatiya Janata Party (BJP) leader is also the longest-serving PM from a non-Congress party.

On July 25, PM Modi will complete 4,078 days in office in three straight terms. "On this day, he (Modi) will become ...