Chief Minister Yogi Adityanath paid floral tributes to Vajpayee at Lok Bhawan.
Ministers and legislators also paid tributes to the late leader.
The Atal Bihari Vajpayee foundation will host a Kavi sammelan at the scientific convention centre later in the day.
Vajpayee, a three term Prime Minister, had served as MP from Lucknow from 1991 to 2009.
–IANS
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