International Yoga Day, observed annually on June 21, was officially recognized by the United Nations General Assembly in December 2014. The day was proposed by India's Prime Minister, Narendra Modi, in his speech at the UN General Assembly on September 27, 2014. Here's a brief overview of its evolution:

1. Proposal and UN Adoption (2014):
   • Narendra Modi suggested June 21 as the International Day of Yoga because it is the longest day of the year in the Northern Hemisphere and holds special significance in many parts of the world.
   • The resolution to establish the day was endorsed by a record 177 member states.
2. First International Yoga Day (2015)
   • The first International Yoga Day was celebrated on June 21, 2015.
   • In India, a massive event was organized in New Delhi, where Prime Minister Modi, along with thousands of participants, performed yoga. This event set two Guinness World Records: one for the largest yoga class, with 35,985 people, and another for the most nationalities participating in a single yoga session (84).
3. Subsequent Celebrations:
   • Each year, International Yoga Day has been celebrated with great enthusiasm worldwide. Various themes have been adopted over the years to highlight different aspects of yoga and its benefits.
   • Events range from large public gatherings, yoga classes, workshops, and discussions to promote the physical, mental, and spiritual benefits of practicing yoga.
4. Global Participation:
   • The observance has grown globally, with numerous countries organizing events and activities to mark the day. It has become a significant event promoting health, wellness, and peace.