Wesak is the biggest of Buddhist festivals. Theravadins celebrate the birth, enlightenment and final passing away of Gautama Buddha. Mahayanists have separate days for each of them, and on Bodhi Day celebrate the enlightenment of the Buddha. Houses are decorated with lanterns and garlands, and temples are ringed with little oil lamps. People often send ‘Wesak cards’ to their friends, and lay people come together at monasteries at this time.