International Yoga Day 2018 to witness worldâs largest performance in Dehradun International Yoga Day 2018 to witness worldâs largest performance in Dehradun News Nation Bureau | Edited By : Lungsanliu Gonmei | Updated on: 30 May 2018, 09:44:26 AM New Delhi: The International Yoga Day on June 21 will witness an unprecedented large performance in Dehradun. In the world's largest, over 60,000 people will perform together different asanas at the event, a government official has said. The Uttarakhand government has moved a proposal to make the Forest Research Institute (FRI) the venue for the event, Chief Secretary Utpal Kumar Singh said on Tuesday at a meeting to review preparations for the event.