India, June 21 -- Prime Minister Narendra Modi on Saturday led the nation in celebrating the 12th International Day of Yoga at Kolkata's iconic Red Road, joining thousands of yoga enthusiasts in a mass demonstration of the Common Yoga Protocol.

Extending his greetings to people across the world on the occasion, Modi noted that June 21, which marks the longest day of the year in many parts of the world, has evolved into one of humanity's largest collective celebrations dedicated to health, wellness and harmony.

PM Narendra Modi joined yoga enthusiasts in a mass demonstration of the Common Yoga Protocol in Kolkata on Sunday. Photo: PIB

"From the Himalayas to the Indian Ocean, and from Bengal and the Northeast to the western region of Sau...