Guru Purnima is a Sansktiy Name of a festival traditionally celebrated by Hindus and Buddhists.
On this day, disciples offer puja (worship) or pay respect to their Guru (Spiritual master, Teacher).
The Guru poornima is falls on the day of full moon, Purnima, in the month of Ashadh (June–July) of the Shaka Samvat, Indian national calendar and Hindu calendar.
Traditionally the festival is celebrated by Buddhists in the honor the lord Buddha who gave His first sermon on this day at Sarnath, Uttar Pradesh in India.
While Hindus celebrate it in the honour of the great sage Vyasa, who is seen one of the greatest gurus in ancient Hindu traditions, and a symbol of Guru-shishya parampara, the Guru disciple tradition.
Vyasa was not only believed to be been born on this day, but also to have started writing the Brahma Sutras on ashadha sudha padyami and ends on this day, hence their recitations as a dedication to him, are organised on this day, which is also known as Vyasa Purnima.
The festival is common to all spiritual traditions in Hinduism, where it is dedicated to the expression of gratitude towards the teacher by his/her disciple.
Hindu ascetics and wandering monks (sanyasis), observe this day by offering puja to the Guru, during the Chaturmas , a four month period during the rainy season, when they choose seclusion, and halt at one selected place; some also give discourses to the local public. Students of the Indian classical music, which also follows the Guru shishya parampara, celebrate this festival, around the world.
Hindu Legend About Guru Poornima
This was the day, when Krishna-Dwaipayana Vyasa – author of the Mahabharata – was born to sage Parashara and a fisherman's daughter Satyavati, thus this day is also celebrated as Vyasa Purnima.
Veda Vyasa, did yeoman service to the cause of Vedic studies by gathering all the Vedic hymns extant during his times, dividing them into four parts based on their use in the sacrificial rites, and teaching them to his four chief disciples–Paila, Vaisampayana, Jaimini and Sumantu.
It was this dividing and editing that earned him the honorific "Vyasa" (vyas = to edit, to divide).
"He divided the Veda into four, namely Rig, Yajur, Sama and Atharva. The histories and the Puranas are said to be the fifth Veda." ( Brahmanda Purana 1.4.21)
Buddhist History About Guru Poornima