celebrated on in this month which marks the Punjabi new year according to the Punjabi calendar. Jallianwala Bagh massacre took place on the Punjabi New year day. Vaisakha Purnima is celebrated as Buddha Purnima or the birthday of Gautama Buddha amongst Buddhists of South and Southeast Asia, Tibet and Mongolia. Purnima refers to the Full Moon. Known in Sinhala as Vesak, it is observed in the full moon of May. Vaisakha sukla Panchami is celebrated as Adi Shankara birthday the great philosopher and theologian of Hinduism religion. Vaishakha Purnima is known as "vaikasi vishakam" in Tamil Nadu which is celebrated as the birthday of Lord Murugan. Vaisakha sukla chaturdasi is celebrated as Narasimha Jayanti Festival in Sri Varaha Lakshmi Narasimha Swamivari Temple at Simhachalam. See also Astronomical basis of the Hindu calendar References Notes 02