Vesak is one of the most important Buddhist festivals. It is also known as Buddha Day, as it celebrates the founder of Buddhism. Observances include prayers, meditation, temple visits, chanting, and acts of kindness such as giving to the needy. Many Buddhists light lanterns and candles to symbolize enlightenment.

The festival is widely celebrated in Sri Lanka, India, Nepal, Thailand, and other Buddhist-majority countries, emphasizing compassion, peace, and wisdom.