Buddha Day, also known as Vesak or Buddha Purnima, is a significant celebration in Buddhism that commemorates the birth, enlightenment, and death of Siddhartha Gautama, who became known as the Buddha. This day typically falls on the full moon in May and is observed by millions of Buddhists around the world. During Buddha Day, devotees engage in various activities such as visiting temples, offering flowers, lighting candles, and participating in meditation. Many also reflect on the teachings of the Buddha and strive to practice compassion and mindfulness in their daily lives.