"Paid tributes to Sardar Vallabhbhai Patel & recalled his contribution in uniting India & strengthening the cooperative movement," Modi said in a tweet.
Earlier in the day, he paid a floral tribute to Patel at his statue in the heart of national capital at Patel Chowk here.
Patel was born on October 31, 1875 at Nadiad in Gujarat.
Modi will also release a Commemorative Stamp at a programme to be held at India Gate later in the day, besides administering Ekta Pledge and flagging off the 'Unity Run'.
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The Government last year decided to observe Sardar Patel Jayanti Day as 'Ekta Diwas'.
As part of celebrations, various programmes will be organised during the week till November 6, recalling Sardar Patel's contribution to unification of India.
(REOPENS DEL 15)
"I bow to Sardar Vallabhbhai Patel on his birth anniversary. We recall his rich contribution to India", the Prime Minister said in an official release.
Modi also tweeted a picture of him paying floral tribute to Patel at his statue in the heart of national capital at Patel Chowk here.