Asalha Puja/Dharma Day (24 July) commemorates the beginning of Buddha’s teaching. Celebrated in the 8th lunar month according to the old Indian calendar, on the day of the full moon, it is one of the most beloved and holy days of the year for those of the Buddhist faith.
Buddha gave his first sermon to five disciples while at Deer Park in Benares. This sermon is sometimes known as the sermon that set the Wheel of Dharma into motion. The wheel consists of four noble truths: life means suffering or dukka, the origin of suffering is attachment or tanha, the cessation of suffering is attainable, and the way to that cessation is through the eightfold path.
The day is seen as an opportunity for Buddhists to show their gratitude to the Buddha and to other enlightened teachers who have shared their knowledge.