Full Moon Day of Kason is a public holiday observed in the Southeast Asian nation of Myanmar (Burma). It usually falls in the month of May according to the Gregorian calendar. This holiday commemorates two significant events in the Buddhist tradition; the birth, enlightenment, and demise of Gautama Buddha. The celestial event of full moon gives the holiday its name, Kason being the second month in the traditional Burmese calendar during which the full moon occurs.

On this day, devout Buddhists flock to temples for community activities, donations and meritorious deeds to demonstrate their devotion and respect for the Buddha. One of the most iconic rituals performed on the Full Moon Day of Kason is the 'watering of the Bodhi tree'. This is because it is believed that the Buddha achieved enlightenment while meditating under a Bodhi tree. Thus, Burmese Buddhists symbolically water the Banyan tree in remembrance of this significant event.

The Full Moon Day of Kason is not entirely a solemn religious festival, it is also a celebration of life and culture. Traditional art forms like music, dance, and puppetry feature prominently in the celebrations. The cities are vibrant with colorful processions and festive music. The day brings together families and communities, fostering a sense of camaraderie and unity among the people in Myanmar. Despite the religious roots, the day is celebrated by all, irrespective of their religious beliefs, portraying the sense of harmony and inclusivity in the Burmese community.