Guru Purnima

Guru Purnima (Poornima) is an Indian & Nepali spiritual tradition dedicated to spiritual and academic teachers, who are evolved or enlightened humans, ready to share their wisdom, with very little or no monetary expectation, based on Karma Yoga. It is celebrated as a festival in Nepal by the Nepalese Hindus and Buddhists. This festival is traditionally observed by Hindus, Buddhists and Jains to revere their chosen spiritual teachers / leaders and express their gratitude. The festival is celebrated on the full moon day (Purnima) in the Hindu month of Ashadha (June–July) as it is known in the Hindu calendar of India and Nepal. This day marks the first peak of the lunar cycle after the peak of the solar cycle.
The celebration is marked by spiritual activities and may include a ritualistic event in honor of the Guru, Guru Pooja. The Guru Principle is said to be a thousand times more active on the day of Guru purnima than on any other day. The word Guru is derived from two words, gu and ru. The Sanskrit root gu means darkness or ignorance, and ru denotes the remover of that darkness. Therefore, a Guru is one who removes the darkness of our ignorance. Gurus are believed by many to be the most necessary part of life. On this day, disciples offer pooja (worship) or pay respect to their Guru (spiritual guide). In addition to having religious importance, this festival has great importance for Indian academics and scholars. Indian academics celebrate this day by thanking their teachers as well as remembering past teachers and scholars.
Traditionally the festival is celebrated by Buddhists in honor of the lord Buddha who gave His first sermon on this day at Sarnath, Uttar Pradesh, India. In the yogic tradition, the day is celebrated as the occasion when Shiva became the first Guru, as he began the transmission of yoga to the Saptarishis. Many Hindus celebrate the day in honor of the great sage Vyasa, who is seen as one of the greatest Gurus in ancient Hindu traditions and a symbol of the Guru-shishya tradition. Vyasa was not only believed to have been born on this day, but also to have started writing the Brahma Sutras on ashadha sudha padyami, which ends on this day. Their recitations are a dedication to him, and 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 an expression of gratitude toward the teacher by his/her disciple. Hindu ascetics and wandering monks (sanyasis), observe this day by offering puja to their Guru, during the Chaturmas, a four-month period during the rainy season, when they choose seclusion and stay at one chosen place; some also give discourses to the local public.[8] Students of Indian classical music and Indian classical dance, which also follow the Guru shishya parampara, celebrate this holy festival around the world.
Hindu legend
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 rites, characteristics 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 Holy Veda into four, namely Rig, Yajur, Sama and Atharva. The histories and the Puranas are said to be the fifth Veda."
Yogic School of Hinduism
Main article: Yoga
In yogic lore, it is said that Guru Purnima was the day that saw Shiva become the Adi Guru, or the first Guru. The story goes that over 15,000 years ago, a yogi[9] appeared in the upper regions of the Himalayas. Nobody knew what his origins were. But his presence was extraordinary, and people gathered. However, he exhibited no signs of life, but for the occasional tears of ecstasy that rolled down his face. People began to drift away, but seven men stayed on. When he opened his eyes, they pleaded with him, wanting to experience whatever was happening to him. He dismissed them, but they persevered. Finally, he gave them a simple preparatory step and closed his eyes again. The seven men began to prepare. Days rolled into weeks, weeks into months, months into years, but the yogi’s attention did not fall upon them again.
After 84 years of sadhana, on the summer solstice that marks the advent of Dakshinayana, the earth’s southern run, the yogi looked at them again. They had become shining receptacles, wonderfully receptive. He could not ignore them anymore. On the very next full moon day, the yogi turned south and sat as a Guru to these seven men. Shiva, the Adiyogi (the first yogi) thus became the Adi Guru. Adiyogi expounded these mechanics of life for many years. The seven disciples became celebrated as the Saptarishis and took this knowledge across the world.
Guru Purnima is held sacred in the yogic tradition because the Adiyogi opened up the possibility for a human being to evolve consciously. The seven different aspects of yoga that were put in these seven individuals became the foundation for the seven basic forms of yoga, something that has still endured.

A Guru blessing a student
Official name	Guru Poornima (Guru Worship on a Summer Full Moon day)
Observed by	Hindu devotees & Buddhist Disciples in India and Nepal
Type	Hindus and Buddhists
Celebrations	National Holiday In Nepal.
Observances	Guru Pooja
Date	Ashadha Purnima (Shukla paksha, Bright lunar fortnight Full Moon) (June–July)
2018 date	July 27, Friday
2019 date	July 16, Tuesday
2020 date	July 5, Sunday
Frequency	annual