Schools and colleges all over the state conducted processions, speeches, recitations, youth conventions and various music, sports and essay-writing competitions to mark the occasion.
Besides, the main functions to celebrate the great soul's birthday were held at his birthplace at Shimla Street in northern part of the city and at the headquarter of Ramakrishna Mission at Belur Math where thousands of his followers visited despite the chill and fog.
Dressed up as Vivekananda, school children participated in colourful processions in different parts of the state.
"Let us dedicate ourselves to the cause of unity, integrity and universal brotherhood," Banerjee wrote on her Facebook post today.
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"To spread Swamiji's vision and ideals of character building among our youth, we are organising 'Vivek Chetana Utsav' throughout the state from January 10 to January 12," she added.
Born on January 12, 1863, as Narendranath Dutta, Swamiji's birthday is celebrated as the country's National Youth Day since 1985.
Throughout the country, this day is commemorated with youth conventions, seminars on yoga, sports and other cultural activities.