The story
Siddhārtha Gautama sat under a pipal tree at Bodh Gayā and resolved not to rise until he understood suffering and its end. Through the night Māra sent temptation and fear against him; he touched the earth to witness his right to sit there; and at dawn, seeing the morning star, he awoke and became the Buddha. The tree is the Bodhi tree, and its descendants grow at Bodh Gayā and at Anuradhapura in Sri Lanka.
Theravāda Buddhists keep the awakening together with the birth and passing on Vesak in May. The Mahāyāna traditions of East Asia keep it on its own day in the twelfth month; in Japan it is Jōdō-e, in Zen monasteries the end of Rōhatsu, a week of sitting from before dawn to late night that ends on the morning of the eighth.
