When Ayub Khan enforced a new constitution in Pakistan? A) 9th January 1962 B) 6th February 1962 C) 8th June 1962 D) None of these Related MCQs: EBDO was promulgated by Ayub Khan in 1959. What does EBDO stand for? Ayub Khan was a member of All Talent Cabinet 1954. Name the Prime Minister: Second constitution of Pakistan was enforced on? The second constitution of Pakistan was enforced on?