The first full moon after the summer solstice in the month of Ashadha (July-August), is known as Guru Purnima. This sacred day marks the first transmission of the yogic sciences from Shiva – the Adiyogi or first yogi – to his first disciples, the Saptarishis, the seven celebrated sages. Thus, the Adiyogi became the Adi Guru or first Guru on this day. The Saptarishis carried this knowing throughout the world. Even today, every spiritual process on the planet draws from the spine of knowing created by Adiyogi.