Biswanath Sarkar, a resident of a remote village from West Bengal, remarried his 90-year-old wife Surodhwani Sarkar to celebrate his 100th birthday. The couple's six children, 23 grandchildren and 10 great-grandchildren planned the wedding, the Hindustan Times reported. "The idea struck my mind when I saw something of a similar kind on social media," the couple's daughter-in-law said.