Such cultural exchanges will ensure that a day is celebrated and is productive as well, he told a students' convention here to mark 125 years of Swami Vivekananda's address at the World Parliament of Religions in Chicago and the birth centenary celebrations of Pandit Deendayal Upadhyay.
"Different days are celebrated in colleges. Sometimes it is a rose day. Some people are against it and a few of them may be present here. I am not opposed to it," Modi said, striking a lighter note as the young audience applauded.
Modi then came up with some suggestions for students.
"Does it ever occur to us to celebrate Tamil day in a Haryana college? That a college in Punjab decides it will celebrate Kerala day? We (students) will sing their songs, dress like them...," he said.
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These festivals will help make 'Ek Bharat, shreshtha bharat' (One India, great India), he said.
While slogans celebrating India's diversity were raised, efforts should also be made to kindle a spirit of pride over this, Modi said, adding that people should be proud of every state and language.