President Ram Nath Kovind and Prime Minister Narendra Modi paid tribute to former PM Atal Bihari Vajpayee at his memorial Sadaiv Atal on his 97th birth anniversary on Saturday. Lok Sabha Speaker Om Birla, Union Ministers Amit Shah, Rajnath Singh and Piyush Goyal also reached the Sadaiv Atal memorial to pay floral tribute to the former PM.