India, June 21 -- Prime Minister Narendra Modi led the 12th International Yoga Day (IYD) celebration at Kolkata's Red Road on Sunday morning, taking part in a mega event where thousands of open-air yoga sessions were held across the eastern state for the first time.

"Yoga is not just for a better personal life but for the world's future," Modi said in his inaugural address.

The celebration started at 6.30am when he reached the venue from Lok Bhawan (formerly Raj Bhawan). He was accompanied by governor RN Ravi, chief minister Suvendu Adhikari, Union minister of state for the ministry of Ayush Prataprao Yadav and senior dignitaries.

"June 21 is the longest day in our part of the world, and now it is the day the world celebrates its bigge...