New Delhi, Dec 25 (ANI): Prime Minister Narendra Modi on Friday extended his warm wishes to Bharatiya Janata Party (BJP) patriarch Atal Bihari Vajpayee on his 91st birthday."Birthday greetings to our beloved Atal ji. We salute this great personality who provided exceptional leadership to India at a crucial time. Be it as a party leader, Parliamentarian, Minister, Prime Minister, Atal ji distinguished himself in every role. This is his speciality," Prime Minister Modi said in a series of tweets. After landing in Delhi this evening, Prime Minister Modi will head straight to Atal Bihari Vajpayee's residence to personally wish him.