Buddhists commemorate the important events that took place in the life of Lord Buddha on this Vesak Full Moon Poya Day. First comes the birth of Siddhartha Gautama in Lumbini in Nepal which took place under the arbor of Sat trees where queen Mahamaya gave birth to him.

The second event was Siddharta Gautam's supreme attainment as the Buddha, the Enlightened One. The third event was Lord Buddha's Parinibbana over 2500 years ago at Kusinagar.
In the Vesak week we find many activities conducted by the Buddhists devotees such as devotional song campaigns, almsgiving, lighting of Vesak lanterns ..etc. Many Viharas are filled with Atasil devotees and pilgrims all over Sri Lanka to mark this great event.

In temples Buddhists worship, offer flowers, light lamps and burn incense. These traditional observances, in essence, have their value in satisfying the religious and emotional needs of the people. On this holy day the Dana plays an important role. Every devotee gives alms. This is a sign of sharing with joy and peace with people. The Vesak Pandal depicting various Jathaka stories with paintings are erected all over Sri Lanka. They are illuminated and presented beautifully.