4th International Yoga Day

NEW DELHI, INDIA - JUNE 21: CISF personnel perform yoga during a mass yoga session on the occasion of International Yoga Day, at Rajpath on June 21, 2018 in New Delhi, India. The first International Yoga Day was observed all over the world on June 21, 2015. The idea of International Yoga Day was first proposed by the PM during his speech at the United Nations General Assembly on September 27, 2014. He also suggested June 21 be observed as International Yoga Day all over the world, as it is the longest day of the year in the Northern Hemisphere and has special significance in many parts of the world. (Photo by Arvind Yadav/Hindustan Times via Getty Images)