Happy International Yoga Day and here we will try to answer that Why Yoga day is celebrated on 21 June every year.
June 21 is the day of the Summer Solstice when the tilt of a planet's axis in the northern hemisphere is most inclined toward the star that it orbits
- in our case, the Earth and the Sun.
June 21 is considered the longest day of the year with the sun rising early and setting late for the northern hemisphere. Many countries from Canada to Iran mark this day with festivities.
But science aside, the summer solstice is also considered an important day in Indian mythology as it marks an event that could be considered the start of Yogic science.