International Yoga Day is celebrated annually on June 21 and was declared to be internationally recognized by the United Nations General Assembly (UNGA) on December 11, 2014. Yoga is a physical, mental, and spiritual practice or discipline that originated in India. The Indian Prime Minister Narendra Modi in his UN Address suggested the date of June 21, as it is the longest day of the year in the Northern Hemisphere and shares special significance in many parts of the world.