The couple got married June 3, 1973 and have two children - son Abhishek and daughter Shweta.
"39 years! And just made it to the blog in time to write. A minute more and all the headers would have had to undergo change. Greetings have been exchanged, family has gathered round with wishes...and dear occupy most of the space in the house...Now .. a time to reminisce, to go back and relive those moments, to remember all that transpired," the 69-year-old posted on blog bigb.bigadda.com.
Amitabh says he and Jaya had planned a holiday in London to celebrate "Zanjeer" success, but his father Harivansh Rai Bachchan wanted them to get married before going on the vacation.
" 'Zanjeer' had just released. And Jaya and I and a few dear friends had decided that if the film did well we would all go to London for a holiday. After a few anxious days on the results of the box office, it was time to put our decision 'in line'.
"So I told my parents, who I had now invited to come and live with me, as is the culture in our land, about our decision. And my Father came down heavily on me - 'If you are planning a holiday with this girl, you will have to marry her and go, else your decision is denied.'
"I was an obedient child! I got married the very next day in a quickly organized wedding with family and some dear friends, without any fanfare, and left for the holiday that very night," he further posted.
Big B says that his marriage was not a lengthy affair.
"Marriages and weddings entail great amount of ritual and protocol and decorum and priests and pundits and maulvis. They last for days with great fanfare. Ours was a simple Bengali pundit wedding, exchange of flowered garlands, the mangal sutra, the sindoor and it was all over before the women from Jaya's side could stop their finger in mouth screams of 'odododooo' ... or words to that effect," he added.