Step 1: Introduction to International Day of Yoga
The International Day of Yoga was declared by the United Nations General Assembly on December 11, 2014 to raise awareness about the physical, mental, and spiritual benefits of practicing yoga.
Step 2: The Date of Celebration
The day is celebrated annually on June 21, as it marks the longest day of the year in the Northern Hemisphere, which holds symbolic significance for the practice of yoga.
Step 3: Establishment of the Day
On December 11, 2014, the UN General Assembly passed a resolution declaring June 21 as the International Day of Yoga, following a proposal by India.
The first International Day of Yoga was celebrated on June 21, 2015.
Step 4: Conclusion
Thus, the International Day of Yoga is celebrated annually on June 21, which corresponds to Option (1).